SEC Info℠  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Hydrofarm Holdings Group, Inc. – ‘10-Q’ for 6/30/22 – ‘EX-101.PRE’

On:  Tuesday, 8/9/22, at 4:36pm ET   ·   For:  6/30/22   ·   Accession #:  1628280-22-21970   ·   File #:  1-39773

Previous ‘10-Q’:  ‘10-Q’ on 5/10/22 for 3/31/22   ·   Next:  ‘10-Q’ on 11/9/22 for 9/30/22   ·   Latest:  ‘10-Q’ on 11/9/23 for 9/30/23   ·   1 Reference:  By:  Hydrofarm Holdings Group, Inc. – ‘S-3’ on 11/9/22

Find Words in Filings emoji
 		  in    Show  and   ↓Hints

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 8/09/22  Hydrofarm Holdings Group, Inc.    10-Q        6/30/22   84:8.6M                                   Workiva Inc Wde… FA01/FA

Quarterly Report   —   Form 10-Q

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML   1.74M 
 2: EX-31.1     Certification -- §302 - SOA'02                      HTML     27K 
 3: EX-31.2     Certification -- §302 - SOA'02                      HTML     26K 
 4: EX-32.1     Certification -- §906 - SOA'02                      HTML     23K 
 5: EX-32.2     Certification -- §906 - SOA'02                      HTML     23K 
11: R1          Cover                                               HTML     75K 
12: R2          Condensed Consolidated Balance Sheets (Unaudited)   HTML    132K 
13: R3          Condensed Consolidated Balance Sheets (Unaudited)   HTML     31K 
                (Parenthetical)                                                  
14: R4          Condensed Consolidated Statements of Operations     HTML     99K 
                (Unaudited)                                                      
15: R5          Condensed Consolidated Statements of Comprehensive  HTML     44K 
                (Loss) Income (Unaudited)                                        
16: R6          Condensed Consolidated Statements of Changes in     HTML    104K 
                Stockholders? Equity (Unaudited)                                 
17: R7          Condensed Consolidated Statements of Changes in     HTML     23K 
                Stockholders? Equity (Unaudited) (Parenthetical)                 
18: R8          Condensed Consolidated Statements of Cash Flows     HTML    118K 
                (Unaudited)                                                      
19: R9          Description of the Business                         HTML     28K 
20: R10         Basis of Presentation and Significant Accounting    HTML     66K 
                Policies                                                         
21: R11         Business Combinations                               HTML    121K 
22: R12         Goodwill and Intangible Assets, Net                 HTML     82K 
23: R13         Earnings (Loss) Per Common Share (?Eps?)            HTML     60K 
24: R14         Accounts Receivable, Net and Inventories            HTML     39K 
25: R15         Operating Leases                                    HTML     53K 
26: R16         Property, Plant and Equipment, Net                  HTML     40K 
27: R17         Accrued Expenses and Other Current Liabilities      HTML     35K 
28: R18         Debt                                                HTML     50K 
29: R19         Stockholders? Equity                                HTML     38K 
30: R20         Stock-Based Compensation                            HTML     74K 
31: R21         Commitments, Contingencies, and Related Party       HTML     26K 
                Transactions                                                     
32: R22         Fair Value Measurements                             HTML     35K 
33: R23         Basis of Presentation and Significant Accounting    HTML     64K 
                Policies (Policies)                                              
34: R24         Basis of Presentation and Significant Accounting    HTML     65K 
                Policies (Tables)                                                
35: R25         Business Combinations (Tables)                      HTML    111K 
36: R26         Goodwill and Intangible Assets, Net (Tables)        HTML    126K 
37: R27         Earnings (Loss) Per Common Share (?Eps?) (Tables)   HTML     60K 
38: R28         Accounts Receivable, Net and Inventories (Tables)   HTML     43K 
39: R29         Operating Leases (Tables)                           HTML     55K 
40: R30         Property, Plant and Equipment, Net (Tables)         HTML     39K 
41: R31         Accrued Expenses and Other Current Liabilities      HTML     35K 
                (Tables)                                                         
42: R32         Debt (Tables)                                       HTML     35K 
43: R33         Stockholders? Equity (Tables)                       HTML     31K 
44: R34         Stock-Based Compensation (Tables)                   HTML     71K 
45: R35         Fair Value Measurements (Tables)                    HTML     32K 
46: R36         Description of the Business (Details)               HTML     43K 
47: R37         BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING    HTML     54K 
                POLICIES - Narrative (Details)                                   
48: R38         BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING    HTML     42K 
                POLICIES - Entity-wide Information (Details)                     
49: R39         BUSINESS COMBINATIONS - Narrative (Details)         HTML    113K 
50: R40         BUSINESS COMBINATIONS - Components (Details)        HTML     59K 
51: R41         BUSINESS COMBINATIONS - Allocation (Details)        HTML    160K 
52: R42         BUSINESS COMBINATIONS - Pro Forma (Details)         HTML     27K 
53: R43         GOODWILL AND INTANGIBLE ASSETS, NET - Narrative     HTML     35K 
                (Details)                                                        
54: R44         GOODWILL AND INTANGIBLE ASSETS, NET - Goodwill      HTML     39K 
                (Details)                                                        
55: R45         GOODWILL AND INTANGIBLE ASSETS, NET - Intangible    HTML     57K 
                Assets, net (Details)                                            
56: R46         GOODWILL AND INTANGIBLE ASSETS, NET - Useful Life   HTML     44K 
                Finite-lived Intangible Assets (Details)                         
57: R47         GOODWILL AND INTANGIBLE ASSETS, NET - Future        HTML     39K 
                Amortization Expense (Details)                                   
58: R48         Earnings (Loss) Per Common Share (?EPS?) -          HTML     65K 
                Calculation for Basic and Diluted EPS (Details)                  
59: R49         Earnings (Loss) Per Common Share (?EPS?) -          HTML     33K 
                Antidilutive (Details)                                           
60: R50         ACCOUNTS RECEIVABLE, NET AND INVENTORIES -          HTML     32K 
                Accounts Receivable, Net (Details)                               
61: R51         ACCOUNTS RECEIVABLE, NET AND INVENTORIES -          HTML     33K 
                Inventories (Details)                                            
62: R52         OPERATING LEASES - Narrative (Details)              HTML     36K 
63: R53         OPERATING LEASES - Balance Sheet (Details)          HTML     32K 
64: R54         OPERATING LEASES - Future Minimum Lease Payment     HTML     48K 
                (Details)                                                        
65: R55         OPERATING LEASES - Lease Not yet Commenced          HTML     36K 
                Maturity (Details)                                               
66: R56         Property, Plant and Equipment, Net (Details)        HTML     51K 
67: R57         Accrued Expenses and Other Current Liabilities      HTML     37K 
                (Details)                                                        
68: R58         DEBT - Components (Details)                         HTML     41K 
69: R59         DEBT - Term Loans (Details)                         HTML     65K 
70: R60         DEBT - Revolving Asset-backed Credit Facilities     HTML     78K 
                (Details)                                                        
71: R61         STOCKHOLDERS? EQUITY - Warrant Narrative (Details)  HTML     46K 
72: R62         STOCKHOLDERS? EQUITY - Outstanding Warrants         HTML     31K 
                (Details)                                                        
73: R63         STOCK-BASED COMPENSATION - Narrative (Details)      HTML     51K 
74: R64         STOCK-BASED COMPENSATION - RSU Activity (Details)   HTML     47K 
75: R65         STOCK-BASED COMPENSATION - PSU Activity (Details)   HTML     42K 
76: R66         STOCK-BASED COMPENSATION - Stock Option Activity    HTML     89K 
                (Details)                                                        
77: R67         STOCK-BASED COMPENSATION - Unvested Stock Option    HTML     42K 
                Activity (Details)                                               
78: R68         Commitments, Contingencies, and Related Party       HTML     28K 
                Transactions (Details)                                           
79: R69         Fair Value Measurements (Details)                   HTML     30K 
82: XML         IDEA XML File -- Filing Summary                      XML    152K 
80: XML         XBRL Instance -- hyfm-20220630_htm                   XML   2.11M 
81: EXCEL       IDEA Workbook of Financial Reports                  XLSX    155K 
 7: EX-101.CAL  XBRL Calculations -- hyfm-20220630_cal               XML    236K 
 8: EX-101.DEF  XBRL Definitions -- hyfm-20220630_def                XML    599K 
 9: EX-101.LAB  XBRL Labels -- hyfm-20220630_lab                     XML   1.67M 
10: EX-101.PRE  XBRL Presentations -- hyfm-20220630_pre              XML   1.03M 
 6: EX-101.SCH  XBRL Schema -- hyfm-20220630                         XSD    173K 
83: JSON        XBRL Instance as JSON Data -- MetaLinks              414±   641K 
84: ZIP         XBRL Zipped Folder -- 0001628280-22-021970-xbrl      Zip    406K

‘EX-101.PRE’   —   XBRL Presentations — hyfm-20220630_pre

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- XBRL Document Created with Wdesk from Workiva -->
<!-- Copyright 2022 Workiva -->
<!-- r:3b085ae6-e20f-415b-b708-bbfb36933d19,g:f9b6115d-7b2b-4074-b8fc-a2be37e11a91 -->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
<link:roleRef roleURI="http://www.hydrofarm.com/role/Cover" xlink:type="simple" xlink:href="hyfm-20220630.xsd#Cover"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/Cover" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_CoverAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_828f2352-6a7b-4db5-be4d-740dc3b68c6b" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentType"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_DocumentType_828f2352-6a7b-4db5-be4d-740dc3b68c6b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentQuarterlyReport_7841c006-78bd-44f9-8bec-4d2fe685fe9d" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentQuarterlyReport"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_DocumentQuarterlyReport_7841c006-78bd-44f9-8bec-4d2fe685fe9d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_0a53edab-3e74-4828-ba71-26922174f6da" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentPeriodEndDate"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_DocumentPeriodEndDate_0a53edab-3e74-4828-ba71-26922174f6da" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_61540341-fb57-4f3c-9142-9fff27b746c4" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentTransitionReport"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_DocumentTransitionReport_61540341-fb57-4f3c-9142-9fff27b746c4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_8f591934-fc8d-4010-b0e7-42c5cecab40e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityFileNumber"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityFileNumber_8f591934-fc8d-4010-b0e7-42c5cecab40e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_295730d5-7ca4-480a-a29b-8c0f299f1f31" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityRegistrantName"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityRegistrantName_295730d5-7ca4-480a-a29b-8c0f299f1f31" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_a8a6cb42-3aad-4774-a687-ef73778718f0" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityIncorporationStateCountryCode"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityIncorporationStateCountryCode_a8a6cb42-3aad-4774-a687-ef73778718f0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_f526a516-d3a1-47b7-bfff-5d95e835c8dd" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityTaxIdentificationNumber"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityTaxIdentificationNumber_f526a516-d3a1-47b7-bfff-5d95e835c8dd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_b10e8e59-ec52-41d3-8416-fd67df56f447" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressAddressLine1"/>
<link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityAddressAddressLine1_b10e8e59-ec52-41d3-8416-fd67df56f447" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_4632b81c-b321-468b-8343-7e8703e989ca" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressCityOrTown"/>
<link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityAddressCityOrTown_4632b81c-b321-468b-8343-7e8703e989ca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_3b0322fd-7a35-4a8c-8e17-3f04c834a2b1" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressStateOrProvince"/>
<link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityAddressStateOrProvince_3b0322fd-7a35-4a8c-8e17-3f04c834a2b1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_cf43b4e1-34d8-450a-9cd2-d57db2371378" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressPostalZipCode"/>
<link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityAddressPostalZipCode_cf43b4e1-34d8-450a-9cd2-d57db2371378" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_184b36f5-6332-480d-81bc-fc1d5e3bb2a5" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_CityAreaCode"/>
<link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_CityAreaCode_184b36f5-6332-480d-81bc-fc1d5e3bb2a5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_11b6a00a-b374-47b4-b1ae-03e4e87db022" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LocalPhoneNumber"/>
<link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_LocalPhoneNumber_11b6a00a-b374-47b4-b1ae-03e4e87db022" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_938e2920-d151-470a-a736-00ffa07583c5" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_Security12bTitle"/>
<link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_Security12bTitle_938e2920-d151-470a-a736-00ffa07583c5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_780f1785-184f-4996-9138-a422340c57f2" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_TradingSymbol"/>
<link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_TradingSymbol_780f1785-184f-4996-9138-a422340c57f2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_93ab8690-49e2-4cbf-add8-ea4e3adbf175" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_SecurityExchangeName"/>
<link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_SecurityExchangeName_93ab8690-49e2-4cbf-add8-ea4e3adbf175" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_5eeb3d7d-d13a-4284-b48d-275da8fc37e2" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCurrentReportingStatus"/>
<link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityCurrentReportingStatus_5eeb3d7d-d13a-4284-b48d-275da8fc37e2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_28859685-1dd7-4fae-9cdf-b84504bd8c5f" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityInteractiveDataCurrent"/>
<link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityInteractiveDataCurrent_28859685-1dd7-4fae-9cdf-b84504bd8c5f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_9c193bb9-9d40-4ffa-85b7-37f937aa60df" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityFilerCategory"/>
<link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityFilerCategory_9c193bb9-9d40-4ffa-85b7-37f937aa60df" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_60fb1782-246f-469e-ad5a-56a8d32a3b1e" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntitySmallBusiness"/>
<link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntitySmallBusiness_60fb1782-246f-469e-ad5a-56a8d32a3b1e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_fe046d3f-6fbb-46ef-b87c-4910e6805d7b" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityEmergingGrowthCompany"/>
<link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityEmergingGrowthCompany_fe046d3f-6fbb-46ef-b87c-4910e6805d7b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_1e57e21f-8488-411b-877d-d7de0d2252e8" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityShellCompany"/>
<link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityShellCompany_1e57e21f-8488-411b-877d-d7de0d2252e8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_d1087771-8d43-43de-a6fe-b5623bbd84a0" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCommonStockSharesOutstanding"/>
<link:presentationArc order="24" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_d1087771-8d43-43de-a6fe-b5623bbd84a0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_d2b0bdca-73c1-493d-be13-8fd0fea36085" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AmendmentFlag"/>
<link:presentationArc order="25" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_AmendmentFlag_d2b0bdca-73c1-493d-be13-8fd0fea36085" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_0bbe0397-0e00-4e1b-82eb-4166d9b780a7" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentFiscalYearFocus"/>
<link:presentationArc order="26" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_DocumentFiscalYearFocus_0bbe0397-0e00-4e1b-82eb-4166d9b780a7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_e12792f3-91c4-46bd-ac6c-f30bf8e6c648" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentFiscalPeriodFocus"/>
<link:presentationArc order="27" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_DocumentFiscalPeriodFocus_e12792f3-91c4-46bd-ac6c-f30bf8e6c648" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_4a1ba20a-a063-4b70-9016-e16d548bb61d" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCentralIndexKey"/>
<link:presentationArc order="28" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_EntityCentralIndexKey_4a1ba20a-a063-4b70-9016-e16d548bb61d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_a1b37a41-24f5-4990-8b7b-8e65b95a5e25" xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_CurrentFiscalYearEndDate"/>
<link:presentationArc order="29" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_0018cb5e-30f9-4dc5-92e7-0076e7445a38" xlink:to="loc_dei_CurrentFiscalYearEndDate_a1b37a41-24f5-4990-8b7b-8e65b95a5e25" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUNAUDITED" xlink:type="simple" xlink:href="hyfm-20220630.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETSUNAUDITED"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUNAUDITED" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_c9114b5e-7c93-42d4-b39f-dd092137061c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementOfFinancialPositionAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_2b8349f3-ea62-45cd-8051-ac05096630d8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsAbstract"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_c9114b5e-7c93-42d4-b39f-dd092137061c" xlink:to="loc_us-gaap_AssetsAbstract_2b8349f3-ea62-45cd-8051-ac05096630d8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_10458993-3e7c-4ffd-959c-8e6303978637" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsCurrentAbstract"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2b8349f3-ea62-45cd-8051-ac05096630d8" xlink:to="loc_us-gaap_AssetsCurrentAbstract_10458993-3e7c-4ffd-959c-8e6303978637" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_32aa591b-e6de-4c33-8ab1-1384342d0586" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_10458993-3e7c-4ffd-959c-8e6303978637" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_32aa591b-e6de-4c33-8ab1-1384342d0586" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_1bae7014-a200-4312-a57b-4a4e19452a09" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashCurrent"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_10458993-3e7c-4ffd-959c-8e6303978637" xlink:to="loc_us-gaap_RestrictedCashCurrent_1bae7014-a200-4312-a57b-4a4e19452a09" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_b595b788-f96d-48c3-a68a-4a97c928a38d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableNetCurrent"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_10458993-3e7c-4ffd-959c-8e6303978637" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_b595b788-f96d-48c3-a68a-4a97c928a38d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_9871c416-20d7-49ce-8f3d-4ba2a0c426be" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryNet"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_10458993-3e7c-4ffd-959c-8e6303978637" xlink:to="loc_us-gaap_InventoryNet_9871c416-20d7-49ce-8f3d-4ba2a0c426be" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansReceivableNetCurrent_f24e1f94-dd4f-4cc3-9324-1dac613b5d75" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NotesAndLoansReceivableNetCurrent"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_10458993-3e7c-4ffd-959c-8e6303978637" xlink:to="loc_us-gaap_NotesAndLoansReceivableNetCurrent_f24e1f94-dd4f-4cc3-9324-1dac613b5d75" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_447f0140-3125-40a6-83c1-a1bec118bcdc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_10458993-3e7c-4ffd-959c-8e6303978637" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_447f0140-3125-40a6-83c1-a1bec118bcdc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_ab0cb7ca-12d4-488b-851a-c42a487ea5b8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsCurrent"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_10458993-3e7c-4ffd-959c-8e6303978637" xlink:to="loc_us-gaap_AssetsCurrent_ab0cb7ca-12d4-488b-851a-c42a487ea5b8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_0b922ddd-c169-4cb1-8341-ae13697cdaf5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2b8349f3-ea62-45cd-8051-ac05096630d8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_0b922ddd-c169-4cb1-8341-ae13697cdaf5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_6d5be1fd-03ae-4134-a242-75eebda6b786" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2b8349f3-ea62-45cd-8051-ac05096630d8" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_6d5be1fd-03ae-4134-a242-75eebda6b786" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_eb0a9b86-4468-4f15-a6f9-f4db3397af09" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2b8349f3-ea62-45cd-8051-ac05096630d8" xlink:to="loc_us-gaap_Goodwill_eb0a9b86-4468-4f15-a6f9-f4db3397af09" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_3dd19f22-c993-4d58-8da5-f132eb0ebeb7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2b8349f3-ea62-45cd-8051-ac05096630d8" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_3dd19f22-c993-4d58-8da5-f132eb0ebeb7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_7b9731ba-d057-4d53-aaad-118e12883dc6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsNoncurrent"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2b8349f3-ea62-45cd-8051-ac05096630d8" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_7b9731ba-d057-4d53-aaad-118e12883dc6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_c2fed443-b65f-4800-9562-1e48c8f9219c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Assets"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_2b8349f3-ea62-45cd-8051-ac05096630d8" xlink:to="loc_us-gaap_Assets_c2fed443-b65f-4800-9562-1e48c8f9219c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6b14b589-9289-4661-8a6c-f1a1fd45cba5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_c9114b5e-7c93-42d4-b39f-dd092137061c" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6b14b589-9289-4661-8a6c-f1a1fd45cba5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_5a02db46-934c-4361-b171-da0caf8f875c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6b14b589-9289-4661-8a6c-f1a1fd45cba5" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_5a02db46-934c-4361-b171-da0caf8f875c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_3b89b229-1950-4d11-a57e-0b6bada633c8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsPayableCurrent"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_5a02db46-934c-4361-b171-da0caf8f875c" xlink:to="loc_us-gaap_AccountsPayableCurrent_3b89b229-1950-4d11-a57e-0b6bada633c8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_AccruedLiabilitiesAndOtherLiabilitiesCurrent_ab96958e-1c36-4de8-98a0-5dcf6ee8a454" xlink:href="hyfm-20220630.xsd#hyfm_AccruedLiabilitiesAndOtherLiabilitiesCurrent"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_5a02db46-934c-4361-b171-da0caf8f875c" xlink:to="loc_hyfm_AccruedLiabilitiesAndOtherLiabilitiesCurrent_ab96958e-1c36-4de8-98a0-5dcf6ee8a454" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_a7f572f2-9ad4-4aa1-9c76-75d1cfd0f34d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_5a02db46-934c-4361-b171-da0caf8f875c" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_a7f572f2-9ad4-4aa1-9c76-75d1cfd0f34d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_57c54a2c-0ad9-4e12-b527-f739f0db81be" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_5a02db46-934c-4361-b171-da0caf8f875c" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_57c54a2c-0ad9-4e12-b527-f739f0db81be" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_c1c3fa81-bc1d-4346-9bdc-830eab9d0e8c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtCurrent"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_5a02db46-934c-4361-b171-da0caf8f875c" xlink:to="loc_us-gaap_LongTermDebtCurrent_c1c3fa81-bc1d-4346-9bdc-830eab9d0e8c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_fa33abe5-1f22-49db-86d9-613189d528ec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrent"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_5a02db46-934c-4361-b171-da0caf8f875c" xlink:to="loc_us-gaap_LiabilitiesCurrent_fa33abe5-1f22-49db-86d9-613189d528ec" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_55b7fae8-1459-4a52-a54d-ea37659ea32c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6b14b589-9289-4661-8a6c-f1a1fd45cba5" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_55b7fae8-1459-4a52-a54d-ea37659ea32c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_6ea098a6-f8ee-4603-8360-128f628d7fbf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6b14b589-9289-4661-8a6c-f1a1fd45cba5" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_6ea098a6-f8ee-4603-8360-128f628d7fbf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_abddaef4-fbf6-4c70-85cc-4b993a5b4168" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6b14b589-9289-4661-8a6c-f1a1fd45cba5" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_abddaef4-fbf6-4c70-85cc-4b993a5b4168" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_d2c79f00-bf05-4254-9920-a3206d0e93a7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6b14b589-9289-4661-8a6c-f1a1fd45cba5" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_d2c79f00-bf05-4254-9920-a3206d0e93a7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_6a70a870-ea84-4036-aa74-bfb5f076114c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Liabilities"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6b14b589-9289-4661-8a6c-f1a1fd45cba5" xlink:to="loc_us-gaap_Liabilities_6a70a870-ea84-4036-aa74-bfb5f076114c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_5b740304-dc85-463e-86cf-3f09a6b584e0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommitmentsAndContingencies"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6b14b589-9289-4661-8a6c-f1a1fd45cba5" xlink:to="loc_us-gaap_CommitmentsAndContingencies_5b740304-dc85-463e-86cf-3f09a6b584e0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityNoteAbstract_891db218-f616-4e17-b2d4-82334a7230fc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityNoteAbstract"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6b14b589-9289-4661-8a6c-f1a1fd45cba5" xlink:to="loc_us-gaap_StockholdersEquityNoteAbstract_891db218-f616-4e17-b2d4-82334a7230fc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_37313bf2-78cc-4c5f-a151-8cf800a1f5ae" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockValue"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityNoteAbstract_891db218-f616-4e17-b2d4-82334a7230fc" xlink:to="loc_us-gaap_CommonStockValue_37313bf2-78cc-4c5f-a151-8cf800a1f5ae" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_326f1bfc-244a-4ce8-8687-25817b0a9cd3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalPaidInCapital"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityNoteAbstract_891db218-f616-4e17-b2d4-82334a7230fc" xlink:to="loc_us-gaap_AdditionalPaidInCapital_326f1bfc-244a-4ce8-8687-25817b0a9cd3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_1c678d89-5a87-48c2-a2d5-dbd2bea007d4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityNoteAbstract_891db218-f616-4e17-b2d4-82334a7230fc" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_1c678d89-5a87-48c2-a2d5-dbd2bea007d4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_2328339f-330d-424c-b364-066ac3018a7e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityNoteAbstract_891db218-f616-4e17-b2d4-82334a7230fc" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_2328339f-330d-424c-b364-066ac3018a7e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_c4ed95f4-c0d0-4deb-8420-04e4727b56de" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityNoteAbstract_891db218-f616-4e17-b2d4-82334a7230fc" xlink:to="loc_us-gaap_StockholdersEquity_c4ed95f4-c0d0-4deb-8420-04e4727b56de" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_d42acda1-d1ef-4276-a58f-14577f5e4722" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
<link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_6b14b589-9289-4661-8a6c-f1a1fd45cba5" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_d42acda1-d1ef-4276-a58f-14577f5e4722" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUNAUDITEDParenthetical" xlink:type="simple" xlink:href="hyfm-20220630.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETSUNAUDITEDParenthetical"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUNAUDITEDParenthetical" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_a4538d34-2d07-4345-885d-f8801bba8ec6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementOfFinancialPositionAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_12318175-d92d-4264-abcb-7f01c7a4a9bc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_a4538d34-2d07-4345-885d-f8801bba8ec6" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_12318175-d92d-4264-abcb-7f01c7a4a9bc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_c55be58a-4768-45d2-af95-cda2f0321e17" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesAuthorized"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_a4538d34-2d07-4345-885d-f8801bba8ec6" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_c55be58a-4768-45d2-af95-cda2f0321e17" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_c43b8f90-770c-4773-8c39-7193a98305ab" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesIssued"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_a4538d34-2d07-4345-885d-f8801bba8ec6" xlink:to="loc_us-gaap_CommonStockSharesIssued_c43b8f90-770c-4773-8c39-7193a98305ab" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_0fbd90c0-4ffe-4418-b9ec-32baa9bab9a8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesOutstanding"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_a4538d34-2d07-4345-885d-f8801bba8ec6" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_0fbd90c0-4ffe-4418-b9ec-32baa9bab9a8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSUNAUDITED" xlink:type="simple" xlink:href="hyfm-20220630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSUNAUDITED"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSUNAUDITED" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementAbstract_84346fe7-b832-4964-ab32-c3653a9f521a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_b4077b7a-479f-431b-bf32-0adef62f6631" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_84346fe7-b832-4964-ab32-c3653a9f521a" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_b4077b7a-479f-431b-bf32-0adef62f6631" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_0c4a39de-b1ac-434c-8b50-a26572684349" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_84346fe7-b832-4964-ab32-c3653a9f521a" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_0c4a39de-b1ac-434c-8b50-a26572684349" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_b54849dd-280f-4ccb-b06a-0543ea876dd9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GrossProfit"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_84346fe7-b832-4964-ab32-c3653a9f521a" xlink:to="loc_us-gaap_GrossProfit_b54849dd-280f-4ccb-b06a-0543ea876dd9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpensesAbstract_f30f12ac-343e-44b2-9c18-503ebe0469f9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingExpensesAbstract"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_84346fe7-b832-4964-ab32-c3653a9f521a" xlink:to="loc_us-gaap_OperatingExpensesAbstract_f30f12ac-343e-44b2-9c18-503ebe0469f9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_9caed485-12f3-4965-8dff-dd0ff4f397d0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_f30f12ac-343e-44b2-9c18-503ebe0469f9" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_9caed485-12f3-4965-8dff-dd0ff4f397d0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_1ec5c3d6-9668-4e44-aad6-e8e784eb2248" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetImpairmentCharges"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_f30f12ac-343e-44b2-9c18-503ebe0469f9" xlink:to="loc_us-gaap_AssetImpairmentCharges_1ec5c3d6-9668-4e44-aad6-e8e784eb2248" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_4a5ccffe-38a1-4ab9-9149-d95ea600cd17" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingIncomeLoss"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_84346fe7-b832-4964-ab32-c3653a9f521a" xlink:to="loc_us-gaap_OperatingIncomeLoss_4a5ccffe-38a1-4ab9-9149-d95ea600cd17" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_5fff9e13-ca5d-4880-94db-c6f09d221fa1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestExpense"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_84346fe7-b832-4964-ab32-c3653a9f521a" xlink:to="loc_us-gaap_InterestExpense_5fff9e13-ca5d-4880-94db-c6f09d221fa1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_748603e7-4551-4f75-ae71-2af6b75c99cd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_84346fe7-b832-4964-ab32-c3653a9f521a" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_748603e7-4551-4f75-ae71-2af6b75c99cd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_3134a9fc-f6ea-4c6f-bd98-4356aae2f122" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_84346fe7-b832-4964-ab32-c3653a9f521a" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_3134a9fc-f6ea-4c6f-bd98-4356aae2f122" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_99a37493-7920-4fd5-829e-9aad867eb978" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_84346fe7-b832-4964-ab32-c3653a9f521a" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_99a37493-7920-4fd5-829e-9aad867eb978" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_e773be02-943e-4f26-be72-7f68399e59d9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
<link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_84346fe7-b832-4964-ab32-c3653a9f521a" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_e773be02-943e-4f26-be72-7f68399e59d9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_f59834bf-7ee7-485a-9868-4f8aab8d3f41" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
<link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_84346fe7-b832-4964-ab32-c3653a9f521a" xlink:to="loc_us-gaap_NetIncomeLoss_f59834bf-7ee7-485a-9868-4f8aab8d3f41" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_c1d1db82-a5f3-426a-8e4b-3b4017851896" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareAbstract"/>
<link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_84346fe7-b832-4964-ab32-c3653a9f521a" xlink:to="loc_us-gaap_EarningsPerShareAbstract_c1d1db82-a5f3-426a-8e4b-3b4017851896" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_41b03424-b8cf-40c0-8b32-7b51a8ec02e6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareBasic"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_c1d1db82-a5f3-426a-8e4b-3b4017851896" xlink:to="loc_us-gaap_EarningsPerShareBasic_41b03424-b8cf-40c0-8b32-7b51a8ec02e6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_21fcad59-7937-466a-980f-42b92ebe1602" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareDiluted"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_c1d1db82-a5f3-426a-8e4b-3b4017851896" xlink:to="loc_us-gaap_EarningsPerShareDiluted_21fcad59-7937-466a-980f-42b92ebe1602" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_6bcc6501-f0d6-4a84-9862-4264e946acc8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract"/>
<link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_84346fe7-b832-4964-ab32-c3653a9f521a" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_6bcc6501-f0d6-4a84-9862-4264e946acc8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_59064b54-d637-416d-9baf-b22b442cb674" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_6bcc6501-f0d6-4a84-9862-4264e946acc8" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_59064b54-d637-416d-9baf-b22b442cb674" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_e1e674fb-2796-41b8-b207-59e862a9a47e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_6bcc6501-f0d6-4a84-9862-4264e946acc8" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_e1e674fb-2796-41b8-b207-59e862a9a47e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSSINCOMEUNAUDITED" xlink:type="simple" xlink:href="hyfm-20220630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSSINCOMEUNAUDITED"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSSINCOMEUNAUDITED" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_bb6698f3-fe91-4a03-b740-3ea8efc70c1a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_05197d62-85ab-4782-9823-43cb58b20578" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_bb6698f3-fe91-4a03-b740-3ea8efc70c1a" xlink:to="loc_us-gaap_NetIncomeLoss_05197d62-85ab-4782-9823-43cb58b20578" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_65bd1f64-ae7b-4766-8c5d-3a32fd7171b0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_bb6698f3-fe91-4a03-b740-3ea8efc70c1a" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_65bd1f64-ae7b-4766-8c5d-3a32fd7171b0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_33e09ae7-0cdf-4d53-8608-ea2cfe255ea6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_65bd1f64-ae7b-4766-8c5d-3a32fd7171b0" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_33e09ae7-0cdf-4d53-8608-ea2cfe255ea6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_79d32b62-a27a-4f44-8f1d-31d2af4eb0ca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_bb6698f3-fe91-4a03-b740-3ea8efc70c1a" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_79d32b62-a27a-4f44-8f1d-31d2af4eb0ca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYUNAUDITED" xlink:type="simple" xlink:href="hyfm-20220630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYUNAUDITED"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYUNAUDITED" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfStockholdersEquityAbstract_1eec6364-c560-47c9-8b5c-b99e9315566f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementOfStockholdersEquityAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_bc613df4-8b0c-4006-88c8-87d0fbe79a8d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfStockholdersEquityAbstract_1eec6364-c560-47c9-8b5c-b99e9315566f" xlink:to="loc_us-gaap_StatementTable_bc613df4-8b0c-4006-88c8-87d0fbe79a8d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_d28bc021-4996-4119-9e37-f89a00f7ee5d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_bc613df4-8b0c-4006-88c8-87d0fbe79a8d" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_d28bc021-4996-4119-9e37-f89a00f7ee5d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_c8312644-0eaf-4834-b9c5-8882b0ffa58a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityComponentDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_d28bc021-4996-4119-9e37-f89a00f7ee5d" xlink:to="loc_us-gaap_EquityComponentDomain_c8312644-0eaf-4834-b9c5-8882b0ffa58a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_f831b5bd-604f-4150-8007-a4265f12222d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_c8312644-0eaf-4834-b9c5-8882b0ffa58a" xlink:to="loc_us-gaap_CommonStockMember_f831b5bd-604f-4150-8007-a4265f12222d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_27800cd7-0402-4cd2-9f63-189999ae4ee1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_c8312644-0eaf-4834-b9c5-8882b0ffa58a" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_27800cd7-0402-4cd2-9f63-189999ae4ee1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_13da936a-2e9e-445d-a4d3-da919aae7eeb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_c8312644-0eaf-4834-b9c5-8882b0ffa58a" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_13da936a-2e9e-445d-a4d3-da919aae7eeb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_5a26a7ce-8fa0-408b-b3ee-97efef155c99" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetainedEarningsMember"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_c8312644-0eaf-4834-b9c5-8882b0ffa58a" xlink:to="loc_us-gaap_RetainedEarningsMember_5a26a7ce-8fa0-408b-b3ee-97efef155c99" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_9d837fe6-08bf-4460-a8ea-fd7b0aab5c1c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_bc613df4-8b0c-4006-88c8-87d0fbe79a8d" xlink:to="loc_us-gaap_StatementLineItems_9d837fe6-08bf-4460-a8ea-fd7b0aab5c1c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_9d837fe6-08bf-4460-a8ea-fd7b0aab5c1c" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_14d42215-e7b3-4550-96b5-c78d0a4b063b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesOutstanding"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_14d42215-e7b3-4550-96b5-c78d0a4b063b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_65b73286-3d8b-4517-8228-5c5b9532076d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_StockholdersEquity_65b73286-3d8b-4517-8228-5c5b9532076d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_392d8184-de85-40a4-82e4-5fe3df28d5dc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_392d8184-de85-40a4-82e4-5fe3df28d5dc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_8dc2e251-b930-4bfd-96c5-fc8c624ae840" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_8dc2e251-b930-4bfd-96c5-fc8c624ae840" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_a85590d8-5d37-4ced-8b99-cb23e4c40c53" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_a85590d8-5d37-4ced-8b99-cb23e4c40c53" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_c6c4427e-cc1b-4503-b643-5f7965554b36" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_c6c4427e-cc1b-4503-b643-5f7965554b36" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_17e8c66a-41d1-4474-ab86-009fbefe73ff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_17e8c66a-41d1-4474-ab86-009fbefe73ff" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_StockIssuedDuringPeriodSharesWarrantExerciseNoncash_42265a6a-45d3-4d97-b5be-d372a44cb73f" xlink:href="hyfm-20220630.xsd#hyfm_StockIssuedDuringPeriodSharesWarrantExerciseNoncash"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_hyfm_StockIssuedDuringPeriodSharesWarrantExerciseNoncash_42265a6a-45d3-4d97-b5be-d372a44cb73f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_StockIssuedDuringPeriodSharesWarrantExercise_8ec55d57-9213-4226-998e-d5806933234c" xlink:href="hyfm-20220630.xsd#hyfm_StockIssuedDuringPeriodSharesWarrantExercise"/>
<link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_hyfm_StockIssuedDuringPeriodSharesWarrantExercise_8ec55d57-9213-4226-998e-d5806933234c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_e31b9fdb-99f6-4fdb-8638-8afff1d801c9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued"/>
<link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_e31b9fdb-99f6-4fdb-8638-8afff1d801c9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_e09bd3a2-299d-4ff0-a5a2-e8d180bdb9e0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
<link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_e09bd3a2-299d-4ff0-a5a2-e8d180bdb9e0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_d5c6bec3-cbff-461d-8eb0-bd8f4e71e500" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
<link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_d5c6bec3-cbff-461d-8eb0-bd8f4e71e500" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_d7b56290-5e27-4240-94e5-48b29e91b381" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesAcquisitions"/>
<link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesAcquisitions_d7b56290-5e27-4240-94e5-48b29e91b381" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_610d508e-85d9-4f0c-b73e-942f8f1f8a1d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodValueAcquisitions"/>
<link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_610d508e-85d9-4f0c-b73e-942f8f1f8a1d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_3b448895-91cc-49f1-ae3d-a6f0f697960d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
<link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_3b448895-91cc-49f1-ae3d-a6f0f697960d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_55d90058-9362-47d9-9d87-51dc566aba5d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
<link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_NetIncomeLoss_55d90058-9362-47d9-9d87-51dc566aba5d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_668b0461-ed0a-449d-a61c-f31c1890e03c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent"/>
<link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_668b0461-ed0a-449d-a61c-f31c1890e03c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_106df0f4-65fd-48eb-bd93-a9d428dcbc34" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesOutstanding"/>
<link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_106df0f4-65fd-48eb-bd93-a9d428dcbc34" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_477d863d-ba96-46b1-82b3-559f5d36d0a0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity"/>
<link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_3a3e69bc-7006-4155-b8fc-0f1684ced288" xlink:to="loc_us-gaap_StockholdersEquity_477d863d-ba96-46b1-82b3-559f5d36d0a0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYUNAUDITEDParenthetical" xlink:type="simple" xlink:href="hyfm-20220630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYUNAUDITEDParenthetical"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITYUNAUDITEDParenthetical" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfStockholdersEquityAbstract_59e33b0b-a7ff-4f2d-a8cc-e72d631b1bf4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementOfStockholdersEquityAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_929a41df-cd2e-4019-93fa-76aa1836b84e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfStockholdersEquityAbstract_59e33b0b-a7ff-4f2d-a8cc-e72d631b1bf4" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_929a41df-cd2e-4019-93fa-76aa1836b84e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_885e57d3-6cc7-464d-bfec-91f91ad82acd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_929a41df-cd2e-4019-93fa-76aa1836b84e" xlink:to="loc_us-gaap_StatementTable_885e57d3-6cc7-464d-bfec-91f91ad82acd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_f2f01b24-e7ef-46bc-85d5-7889d476a5a2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementClassOfStockAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_885e57d3-6cc7-464d-bfec-91f91ad82acd" xlink:to="loc_us-gaap_StatementClassOfStockAxis_f2f01b24-e7ef-46bc-85d5-7889d476a5a2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_4d973c64-95a5-42b2-aa22-22b728eafaab" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_f2f01b24-e7ef-46bc-85d5-7889d476a5a2" xlink:to="loc_us-gaap_ClassOfStockDomain_4d973c64-95a5-42b2-aa22-22b728eafaab" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_cd71ab1a-7d86-497c-9dda-6c08e50a368f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_4d973c64-95a5-42b2-aa22-22b728eafaab" xlink:to="loc_us-gaap_CommonStockMember_cd71ab1a-7d86-497c-9dda-6c08e50a368f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_13beeb37-b5ac-406d-a1b9-fe89b922c960" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_885e57d3-6cc7-464d-bfec-91f91ad82acd" xlink:to="loc_us-gaap_StatementLineItems_13beeb37-b5ac-406d-a1b9-fe89b922c960" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_12d597cb-fc01-445c-a7d5-dec42f7b089d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsOfStockIssuanceCosts"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_13beeb37-b5ac-406d-a1b9-fe89b922c960" xlink:to="loc_us-gaap_PaymentsOfStockIssuanceCosts_12d597cb-fc01-445c-a7d5-dec42f7b089d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUNAUDITED" xlink:type="simple" xlink:href="hyfm-20220630.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUNAUDITED"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUNAUDITED" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_49f67b00-148e-47c7-bc01-1d3e3fbaf2b7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementOfCashFlowsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_488b295f-994f-495f-9871-16cfc87c55a2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_49f67b00-148e-47c7-bc01-1d3e3fbaf2b7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_488b295f-994f-495f-9871-16cfc87c55a2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_1c31d2b4-b0f4-4531-800a-b80bdb6cf363" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_488b295f-994f-495f-9871-16cfc87c55a2" xlink:to="loc_us-gaap_NetIncomeLoss_1c31d2b4-b0f4-4531-800a-b80bdb6cf363" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_f0d3a2c5-dd5a-44f3-93bd-ddc4dec375fd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_488b295f-994f-495f-9871-16cfc87c55a2" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_f0d3a2c5-dd5a-44f3-93bd-ddc4dec375fd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_0a616533-50cb-4e6f-b0b1-c01789ab9fd6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_f0d3a2c5-dd5a-44f3-93bd-ddc4dec375fd" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_0a616533-50cb-4e6f-b0b1-c01789ab9fd6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWriteDown_5dac85ba-65f7-4c8a-9a86-279553eeb719" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryWriteDown"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_f0d3a2c5-dd5a-44f3-93bd-ddc4dec375fd" xlink:to="loc_us-gaap_InventoryWriteDown_5dac85ba-65f7-4c8a-9a86-279553eeb719" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_c63cb977-2600-4621-8dd7-330f238b1fc2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensation"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_f0d3a2c5-dd5a-44f3-93bd-ddc4dec375fd" xlink:to="loc_us-gaap_ShareBasedCompensation_c63cb977-2600-4621-8dd7-330f238b1fc2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseExpense_a35b4870-61f6-49e8-bc78-b9b4d34915ac" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseExpense"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_f0d3a2c5-dd5a-44f3-93bd-ddc4dec375fd" xlink:to="loc_us-gaap_OperatingLeaseExpense_a35b4870-61f6-49e8-bc78-b9b4d34915ac" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_38efc81f-f915-4816-8675-424d68f44eb7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetImpairmentCharges"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_f0d3a2c5-dd5a-44f3-93bd-ddc4dec375fd" xlink:to="loc_us-gaap_AssetImpairmentCharges_38efc81f-f915-4816-8675-424d68f44eb7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_af36a743-6855-428d-912d-104bde2bbb6e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_f0d3a2c5-dd5a-44f3-93bd-ddc4dec375fd" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_af36a743-6855-428d-912d-104bde2bbb6e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_d60f7455-1a25-43ec-a2e7-0b64386be670" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_f0d3a2c5-dd5a-44f3-93bd-ddc4dec375fd" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_d60f7455-1a25-43ec-a2e7-0b64386be670" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_484c7eca-4c77-4a74-858e-64463e1ceaff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherOperatingActivitiesCashFlowStatement"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_f0d3a2c5-dd5a-44f3-93bd-ddc4dec375fd" xlink:to="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_484c7eca-4c77-4a74-858e-64463e1ceaff" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_b97df867-a030-4e8a-8e64-49f8124e3318" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_488b295f-994f-495f-9871-16cfc87c55a2" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_b97df867-a030-4e8a-8e64-49f8124e3318" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_482ece4d-ded9-4ea1-8804-e8a7abbdb046" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_b97df867-a030-4e8a-8e64-49f8124e3318" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_482ece4d-ded9-4ea1-8804-e8a7abbdb046" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_83570ff5-332b-4bb3-a588-a4f653e3afc5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInInventories"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_b97df867-a030-4e8a-8e64-49f8124e3318" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_83570ff5-332b-4bb3-a588-a4f653e3afc5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_8315cbb8-50d7-4c9b-86a4-bde8f6a74d10" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_b97df867-a030-4e8a-8e64-49f8124e3318" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_8315cbb8-50d7-4c9b-86a4-bde8f6a74d10" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_7556c57a-c312-4cd3-b799-33f2e8f34c8c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_b97df867-a030-4e8a-8e64-49f8124e3318" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_7556c57a-c312-4cd3-b799-33f2e8f34c8c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_29b26335-fa5a-4740-9bdb-e5c2d82e2261" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_b97df867-a030-4e8a-8e64-49f8124e3318" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_29b26335-fa5a-4740-9bdb-e5c2d82e2261" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_IncreaseDecreaseInAccruedExpenseAndOtherCurrentLiabilities_d8622c0a-b867-46e0-95fe-1c03fa20b521" xlink:href="hyfm-20220630.xsd#hyfm_IncreaseDecreaseInAccruedExpenseAndOtherCurrentLiabilities"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_b97df867-a030-4e8a-8e64-49f8124e3318" xlink:to="loc_hyfm_IncreaseDecreaseInAccruedExpenseAndOtherCurrentLiabilities_d8622c0a-b867-46e0-95fe-1c03fa20b521" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_c5d41db0-bdc2-4080-96fd-1ddd68401f1f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_b97df867-a030-4e8a-8e64-49f8124e3318" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_c5d41db0-bdc2-4080-96fd-1ddd68401f1f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_IncreaseDecreaseInLeaseLiabilities_40d41d92-5a16-4800-a652-c7849fc13b0d" xlink:href="hyfm-20220630.xsd#hyfm_IncreaseDecreaseInLeaseLiabilities"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_b97df867-a030-4e8a-8e64-49f8124e3318" xlink:to="loc_hyfm_IncreaseDecreaseInLeaseLiabilities_40d41d92-5a16-4800-a652-c7849fc13b0d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_5833a90d-cf82-46bb-aaf6-ec7ec109e5bc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities"/>
<link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_b97df867-a030-4e8a-8e64-49f8124e3318" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_5833a90d-cf82-46bb-aaf6-ec7ec109e5bc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_fff2b838-9a50-4c1e-86f6-549f2209114b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_488b295f-994f-495f-9871-16cfc87c55a2" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_fff2b838-9a50-4c1e-86f6-549f2209114b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_f6eb64ef-8d3d-4793-a0b6-84f5fc6ee20b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_49f67b00-148e-47c7-bc01-1d3e3fbaf2b7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_f6eb64ef-8d3d-4793-a0b6-84f5fc6ee20b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_b601cd7f-7d8e-40ed-9d6e-4cbf24bd1206" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_f6eb64ef-8d3d-4793-a0b6-84f5fc6ee20b" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_b601cd7f-7d8e-40ed-9d6e-4cbf24bd1206" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_3aafae09-8bdb-4eff-bff2-b0de8bfe8354" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_f6eb64ef-8d3d-4793-a0b6-84f5fc6ee20b" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_3aafae09-8bdb-4eff-bff2-b0de8bfe8354" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_26c3ee4b-5e3f-4112-a9d1-cb6a39252a12" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_f6eb64ef-8d3d-4793-a0b6-84f5fc6ee20b" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_26c3ee4b-5e3f-4112-a9d1-cb6a39252a12" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_100ce8c9-7a1b-4a0d-90ba-dfea1a3236bb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_f6eb64ef-8d3d-4793-a0b6-84f5fc6ee20b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_100ce8c9-7a1b-4a0d-90ba-dfea1a3236bb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_825507b4-467d-427d-907a-5a21954dad3b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_49f67b00-148e-47c7-bc01-1d3e3fbaf2b7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_825507b4-467d-427d-907a-5a21954dad3b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_22f8c1c0-b532-4efa-b24b-6daa34c68207" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_825507b4-467d-427d-907a-5a21954dad3b" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_22f8c1c0-b532-4efa-b24b-6daa34c68207" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromWarrantExercises_c9371b1b-a031-4907-b6b3-aff3362c1645" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromWarrantExercises"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_825507b4-467d-427d-907a-5a21954dad3b" xlink:to="loc_us-gaap_ProceedsFromWarrantExercises_c9371b1b-a031-4907-b6b3-aff3362c1645" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_b83e3c15-b02c-4f80-aa36-86c24febc04b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_825507b4-467d-427d-907a-5a21954dad3b" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_b83e3c15-b02c-4f80-aa36-86c24febc04b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLinesOfCredit_7757f343-8b94-433e-b264-e652a1e92577" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromLinesOfCredit"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_825507b4-467d-427d-907a-5a21954dad3b" xlink:to="loc_us-gaap_ProceedsFromLinesOfCredit_7757f343-8b94-433e-b264-e652a1e92577" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLinesOfCredit_67ea2cbd-5055-4dfa-a3f5-131718410d99" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RepaymentsOfLinesOfCredit"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_825507b4-467d-427d-907a-5a21954dad3b" xlink:to="loc_us-gaap_RepaymentsOfLinesOfCredit_67ea2cbd-5055-4dfa-a3f5-131718410d99" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_9afbc4d3-d1ca-41c8-8c01-3fcca741c216" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RepaymentsOfDebt"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_825507b4-467d-427d-907a-5a21954dad3b" xlink:to="loc_us-gaap_RepaymentsOfDebt_9afbc4d3-d1ca-41c8-8c01-3fcca741c216" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_e480824d-9a1a-4bff-8f71-c5f62f17af08" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_825507b4-467d-427d-907a-5a21954dad3b" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_e480824d-9a1a-4bff-8f71-c5f62f17af08" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_e3f09ca3-dd55-4cc3-af8d-d05a0b00a79e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_825507b4-467d-427d-907a-5a21954dad3b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_e3f09ca3-dd55-4cc3-af8d-d05a0b00a79e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_3ecd1474-4fb9-45f4-b87b-3723d2d05f0c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_49f67b00-148e-47c7-bc01-1d3e3fbaf2b7" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_3ecd1474-4fb9-45f4-b87b-3723d2d05f0c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_f352b0fb-242c-4d48-8689-6c1701151482" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_49f67b00-148e-47c7-bc01-1d3e3fbaf2b7" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_f352b0fb-242c-4d48-8689-6c1701151482" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_b123e29a-f4d3-4f2c-b57d-b6933406c3c5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_49f67b00-148e-47c7-bc01-1d3e3fbaf2b7" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_b123e29a-f4d3-4f2c-b57d-b6933406c3c5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_dd317eb4-d719-49a9-82e9-41f846399e41" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_49f67b00-148e-47c7-bc01-1d3e3fbaf2b7" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_dd317eb4-d719-49a9-82e9-41f846399e41" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/DESCRIPTIONOFTHEBUSINESS" xlink:type="simple" xlink:href="hyfm-20220630.xsd#DESCRIPTIONOFTHEBUSINESS"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/DESCRIPTIONOFTHEBUSINESS" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_68c92c23-8586-4cb4-9708-561f705a47a7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_118441ab-e9ea-4db4-89d0-c91c965693aa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_68c92c23-8586-4cb4-9708-561f705a47a7" xlink:to="loc_us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_118441ab-e9ea-4db4-89d0-c91c965693aa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/DESCRIPTIONOFTHEBUSINESSDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#DESCRIPTIONOFTHEBUSINESSDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/DESCRIPTIONOFTHEBUSINESSDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_f030b4f4-1bf9-4353-934a-2294f1166ac1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_3ec3a2e0-de89-498c-9634-9392b9035b1b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfStockByClassTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_f030b4f4-1bf9-4353-934a-2294f1166ac1" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_3ec3a2e0-de89-498c-9634-9392b9035b1b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_f1f41a68-1cc4-413f-a8f9-a70da0f4ab4e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementClassOfStockAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_3ec3a2e0-de89-498c-9634-9392b9035b1b" xlink:to="loc_us-gaap_StatementClassOfStockAxis_f1f41a68-1cc4-413f-a8f9-a70da0f4ab4e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_69328b23-95db-4ce8-9482-a6982610d956" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_f1f41a68-1cc4-413f-a8f9-a70da0f4ab4e" xlink:to="loc_us-gaap_ClassOfStockDomain_69328b23-95db-4ce8-9482-a6982610d956" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_6331332d-e18a-450c-b1df-8db759f3dd0b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_69328b23-95db-4ce8-9482-a6982610d956" xlink:to="loc_us-gaap_CommonStockMember_6331332d-e18a-450c-b1df-8db759f3dd0b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_cc4788aa-db96-4ec3-9994-7203448dfc73" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_3ec3a2e0-de89-498c-9634-9392b9035b1b" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_cc4788aa-db96-4ec3-9994-7203448dfc73" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_b6b7e290-8049-4acf-9d6a-f34940840443" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_cc4788aa-db96-4ec3-9994-7203448dfc73" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_b6b7e290-8049-4acf-9d6a-f34940840443" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IPOMember_7c5e6434-e369-451e-ba43-7bd869a61680" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IPOMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_b6b7e290-8049-4acf-9d6a-f34940840443" xlink:to="loc_us-gaap_IPOMember_7c5e6434-e369-451e-ba43-7bd869a61680" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OverAllotmentOptionMember_27cbd59c-13b1-473f-950f-42709a1f7d8e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OverAllotmentOptionMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_b6b7e290-8049-4acf-9d6a-f34940840443" xlink:to="loc_us-gaap_OverAllotmentOptionMember_27cbd59c-13b1-473f-950f-42709a1f7d8e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_FollowOnPublicOfferingMember_e207a60a-acb1-4812-9cac-8a541cf08953" xlink:href="hyfm-20220630.xsd#hyfm_FollowOnPublicOfferingMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_b6b7e290-8049-4acf-9d6a-f34940840443" xlink:to="loc_hyfm_FollowOnPublicOfferingMember_e207a60a-acb1-4812-9cac-8a541cf08953" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_FollowOnPublicOfferingOverAllotmentOptionMember_9c88527a-70b4-4e75-9763-ecc772c6bce5" xlink:href="hyfm-20220630.xsd#hyfm_FollowOnPublicOfferingOverAllotmentOptionMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_hyfm_FollowOnPublicOfferingMember_e207a60a-acb1-4812-9cac-8a541cf08953" xlink:to="loc_hyfm_FollowOnPublicOfferingOverAllotmentOptionMember_9c88527a-70b4-4e75-9763-ecc772c6bce5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_b4903a87-bda0-4ff5-999a-d25e145d0cc5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockLineItems"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_3ec3a2e0-de89-498c-9634-9392b9035b1b" xlink:to="loc_us-gaap_ClassOfStockLineItems_b4903a87-bda0-4ff5-999a-d25e145d0cc5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_919d0425-0c23-4d20-83f0-34cc85fed7de" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_b4903a87-bda0-4ff5-999a-d25e145d0cc5" xlink:to="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_919d0425-0c23-4d20-83f0-34cc85fed7de" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockPricePerShare_6fd5836e-3e7a-4fa2-8054-fb94239a6652" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleOfStockPricePerShare"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_b4903a87-bda0-4ff5-999a-d25e145d0cc5" xlink:to="loc_us-gaap_SaleOfStockPricePerShare_6fd5836e-3e7a-4fa2-8054-fb94239a6652" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_62fec415-a2c9-4f46-ae5a-3e94cd7dd884" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_b4903a87-bda0-4ff5-999a-d25e145d0cc5" xlink:to="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_62fec415-a2c9-4f46-ae5a-3e94cd7dd884" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_db52b62b-be50-411a-899e-53ac231fbf85" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsOfStockIssuanceCosts"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockLineItems_b4903a87-bda0-4ff5-999a-d25e145d0cc5" xlink:to="loc_us-gaap_PaymentsOfStockIssuanceCosts_db52b62b-be50-411a-899e-53ac231fbf85" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIES" xlink:type="simple" xlink:href="hyfm-20220630.xsd#BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIES"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIES" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_bdc4c6f6-56ae-4a72-bbbd-eb0e68d9c775" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_61707bdf-894e-4ab4-a899-3f7f71eb74f4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_bdc4c6f6-56ae-4a72-bbbd-eb0e68d9c775" xlink:to="loc_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_61707bdf-894e-4ab4-a899-3f7f71eb74f4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIESPolicies" xlink:type="simple" xlink:href="hyfm-20220630.xsd#BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIESPolicies"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIESPolicies" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_23903d22-2926-4a74-84a5-fdc9e3f038fc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_04ce894a-23b3-4734-a9ae-108538c14e36" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_23903d22-2926-4a74-84a5-fdc9e3f038fc" xlink:to="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_04ce894a-23b3-4734-a9ae-108538c14e36" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UseOfEstimates_8a792f7f-8cd6-4cbe-8ec5-07ca4f17eddc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UseOfEstimates"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_23903d22-2926-4a74-84a5-fdc9e3f038fc" xlink:to="loc_us-gaap_UseOfEstimates_8a792f7f-8cd6-4cbe-8ec5-07ca4f17eddc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationsPolicy_4e9ed794-9200-4c34-a478-6486ffbc4933" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationsPolicy"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_23903d22-2926-4a74-84a5-fdc9e3f038fc" xlink:to="loc_us-gaap_BusinessCombinationsPolicy_4e9ed794-9200-4c34-a478-6486ffbc4933" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_fcd2bce1-5ec4-4ba4-9cb7-82b77953550a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerPolicyTextBlock"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_23903d22-2926-4a74-84a5-fdc9e3f038fc" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_fcd2bce1-5ec4-4ba4-9cb7-82b77953550a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_6af0d31c-7aa8-4e24-95f4-9b96a6dae4b5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_23903d22-2926-4a74-84a5-fdc9e3f038fc" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_6af0d31c-7aa8-4e24-95f4-9b96a6dae4b5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPolicyTextBlock_149059da-0fde-4463-aefe-24b6ae1a5685" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxPolicyTextBlock"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_23903d22-2926-4a74-84a5-fdc9e3f038fc" xlink:to="loc_us-gaap_IncomeTaxPolicyTextBlock_149059da-0fde-4463-aefe-24b6ae1a5685" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_f4ffbc9a-0cc6-42ce-87a8-f59f06b5c745" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_23903d22-2926-4a74-84a5-fdc9e3f038fc" xlink:to="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_f4ffbc9a-0cc6-42ce-87a8-f59f06b5c745" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_PurchaseCommitmentPolicyPolicyTextBlock_ca0d86b2-c214-4d3d-b90f-8dd01512cad5" xlink:href="hyfm-20220630.xsd#hyfm_PurchaseCommitmentPolicyPolicyTextBlock"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_23903d22-2926-4a74-84a5-fdc9e3f038fc" xlink:to="loc_hyfm_PurchaseCommitmentPolicyPolicyTextBlock_ca0d86b2-c214-4d3d-b90f-8dd01512cad5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingenciesPolicyTextBlock_d5ba0d30-d658-470a-b541-491a89587278" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommitmentsAndContingenciesPolicyTextBlock"/>
<link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_23903d22-2926-4a74-84a5-fdc9e3f038fc" xlink:to="loc_us-gaap_CommitmentsAndContingenciesPolicyTextBlock_d5ba0d30-d658-470a-b541-491a89587278" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIESTables" xlink:type="simple" xlink:href="hyfm-20220630.xsd#BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIESTables"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIESTables" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_1ea5c84f-7c57-417c-87ba-faadcba650ef" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock_824374c6-dfdb-4172-a5f8-2c3b6f1b57df" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_1ea5c84f-7c57-417c-87ba-faadcba650ef" xlink:to="loc_us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock_824374c6-dfdb-4172-a5f8-2c3b6f1b57df" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongLivedAssetsByGeographicAreasTableTextBlock_637b8f02-6e8e-4d39-9e81-d71ae554933f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongLivedAssetsByGeographicAreasTableTextBlock"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_1ea5c84f-7c57-417c-87ba-faadcba650ef" xlink:to="loc_us-gaap_LongLivedAssetsByGeographicAreasTableTextBlock_637b8f02-6e8e-4d39-9e81-d71ae554933f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIESNarrativeDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIESNarrativeDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIESNarrativeDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_9a7f7f71-f540-4cb8-829f-8a7982dc280a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_8ab4e46d-ee4a-4b30-b53d-a0263a032088" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerLiability"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_9a7f7f71-f540-4cb8-829f-8a7982dc280a" xlink:to="loc_us-gaap_ContractWithCustomerLiability_8ab4e46d-ee4a-4b30-b53d-a0263a032088" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfOperatingSegments_6da648c1-98fe-456d-bbb3-53ce01922b92" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfOperatingSegments"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_9a7f7f71-f540-4cb8-829f-8a7982dc280a" xlink:to="loc_us-gaap_NumberOfOperatingSegments_6da648c1-98fe-456d-bbb3-53ce01922b92" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_14fbd32e-a0e6-4b71-83a1-c92113f5e2f4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfReportableSegments"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_9a7f7f71-f540-4cb8-829f-8a7982dc280a" xlink:to="loc_us-gaap_NumberOfReportableSegments_14fbd32e-a0e6-4b71-83a1-c92113f5e2f4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_FinancingReceivableImpairmentLoss_f44456b6-8184-45ad-b590-2d607940ccdb" xlink:href="hyfm-20220630.xsd#hyfm_FinancingReceivableImpairmentLoss"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_9a7f7f71-f540-4cb8-829f-8a7982dc280a" xlink:to="loc_hyfm_FinancingReceivableImpairmentLoss_f44456b6-8184-45ad-b590-2d607940ccdb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansReceivableNetCurrent_7e675098-6c84-40a4-8256-59dd532f154a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NotesAndLoansReceivableNetCurrent"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_9a7f7f71-f540-4cb8-829f-8a7982dc280a" xlink:to="loc_us-gaap_NotesAndLoansReceivableNetCurrent_7e675098-6c84-40a4-8256-59dd532f154a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_d8f4c7b6-7d46-4b5d-b7b9-065684bea97a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_9a7f7f71-f540-4cb8-829f-8a7982dc280a" xlink:to="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_d8f4c7b6-7d46-4b5d-b7b9-065684bea97a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_ae631c35-8c65-49aa-aa2a-2492e945a2b2" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_d8f4c7b6-7d46-4b5d-b7b9-065684bea97a" xlink:to="loc_srt_ProductOrServiceAxis_ae631c35-8c65-49aa-aa2a-2492e945a2b2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_8844d97d-f891-4e73-80e4-c76617088a76" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ProductOrServiceAxis_ae631c35-8c65-49aa-aa2a-2492e945a2b2" xlink:to="loc_srt_ProductsAndServicesDomain_8844d97d-f891-4e73-80e4-c76617088a76" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShippingAndHandlingMember_e08cf2ee-ec2c-4d9e-b806-2f346fd5cb8e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShippingAndHandlingMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ProductsAndServicesDomain_8844d97d-f891-4e73-80e4-c76617088a76" xlink:to="loc_us-gaap_ShippingAndHandlingMember_e08cf2ee-ec2c-4d9e-b806-2f346fd5cb8e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_890151cb-34de-4433-896a-3f16f1845893" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAxis"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_d8f4c7b6-7d46-4b5d-b7b9-065684bea97a" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_890151cb-34de-4433-896a-3f16f1845893" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c081e4f7-6bfa-40cf-9e90-396991c5b6a1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_890151cb-34de-4433-896a-3f16f1845893" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c081e4f7-6bfa-40cf-9e90-396991c5b6a1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_InnovativeGrowersEquipmentIncMember_ad500f01-83ce-4bf0-948a-cffa011f7f61" xlink:href="hyfm-20220630.xsd#hyfm_InnovativeGrowersEquipmentIncMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c081e4f7-6bfa-40cf-9e90-396991c5b6a1" xlink:to="loc_hyfm_InnovativeGrowersEquipmentIncMember_ad500f01-83ce-4bf0-948a-cffa011f7f61" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_6150e462-998a-4182-b050-c24b96900249" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_d8f4c7b6-7d46-4b5d-b7b9-065684bea97a" xlink:to="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_6150e462-998a-4182-b050-c24b96900249" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_b2b8cad4-3bd6-4a7d-a497-67abb8bec5cf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_6150e462-998a-4182-b050-c24b96900249" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_b2b8cad4-3bd6-4a7d-a497-67abb8bec5cf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_6ca6dbd9-7e13-435a-a018-19039bd4978c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_6150e462-998a-4182-b050-c24b96900249" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_6ca6dbd9-7e13-435a-a018-19039bd4978c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_b6142942-7279-4fa6-8d93-cf89a809570e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_6150e462-998a-4182-b050-c24b96900249" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_b6142942-7279-4fa6-8d93-cf89a809570e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_60c81543-20ec-4859-89a4-8f60587f81db" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_6150e462-998a-4182-b050-c24b96900249" xlink:to="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_60c81543-20ec-4859-89a4-8f60587f81db" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIESEntitywideInformationDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIESEntitywideInformationDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIESEntitywideInformationDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_20d0afaa-33bc-483d-bf7f-9e99046791f7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_d8b4e151-93fe-4223-ad07-cc28c6084a67" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_20d0afaa-33bc-483d-bf7f-9e99046791f7" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_d8b4e151-93fe-4223-ad07-cc28c6084a67" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_043d2a4f-16b9-4e75-8b29-3d5422ac58be" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_d8b4e151-93fe-4223-ad07-cc28c6084a67" xlink:to="loc_srt_ConsolidationItemsAxis_043d2a4f-16b9-4e75-8b29-3d5422ac58be" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_fc9fad72-02ba-4841-a689-bded627679c8" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ConsolidationItemsDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsAxis_043d2a4f-16b9-4e75-8b29-3d5422ac58be" xlink:to="loc_srt_ConsolidationItemsDomain_fc9fad72-02ba-4841-a689-bded627679c8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_5e273c4b-4a05-4c92-b020-1b679cb4e050" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingSegmentsMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_fc9fad72-02ba-4841-a689-bded627679c8" xlink:to="loc_us-gaap_OperatingSegmentsMember_5e273c4b-4a05-4c92-b020-1b679cb4e050" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersegmentEliminationMember_3ea79d2c-26aa-459c-b3fe-57e8dcb0862c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IntersegmentEliminationMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_ConsolidationItemsDomain_fc9fad72-02ba-4841-a689-bded627679c8" xlink:to="loc_us-gaap_IntersegmentEliminationMember_3ea79d2c-26aa-459c-b3fe-57e8dcb0862c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_7e153e28-c46c-4f0f-9336-9fe5de819e5a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_d8b4e151-93fe-4223-ad07-cc28c6084a67" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_7e153e28-c46c-4f0f-9336-9fe5de819e5a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_5c13dba7-7614-46c0-9787-fbd66d0b330a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_7e153e28-c46c-4f0f-9336-9fe5de819e5a" xlink:to="loc_us-gaap_SegmentDomain_5c13dba7-7614-46c0-9787-fbd66d0b330a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_UnitedStatesSegmentMember_e2a42745-b43e-4e84-8146-64238bc7b3d1" xlink:href="hyfm-20220630.xsd#hyfm_UnitedStatesSegmentMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_5c13dba7-7614-46c0-9787-fbd66d0b330a" xlink:to="loc_hyfm_UnitedStatesSegmentMember_e2a42745-b43e-4e84-8146-64238bc7b3d1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_CanadaSegmentMember_fd4595af-1e11-4ec6-8698-efd84358affb" xlink:href="hyfm-20220630.xsd#hyfm_CanadaSegmentMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_5c13dba7-7614-46c0-9787-fbd66d0b330a" xlink:to="loc_hyfm_CanadaSegmentMember_fd4595af-1e11-4ec6-8698-efd84358affb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_26bce8ab-7f35-4c5a-8be9-09df9461c45b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentReportingInformationLineItems"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_d8b4e151-93fe-4223-ad07-cc28c6084a67" xlink:to="loc_us-gaap_SegmentReportingInformationLineItems_26bce8ab-7f35-4c5a-8be9-09df9461c45b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_ef28eba1-4b2e-419b-8324-1dc26c8309ce" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_26bce8ab-7f35-4c5a-8be9-09df9461c45b" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_ef28eba1-4b2e-419b-8324-1dc26c8309ce" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_PropertyPlantEquipmentAndLeaseRightOfUseAssetNet_8d8ca213-7bc3-4319-b64c-db007b9ebc99" xlink:href="hyfm-20220630.xsd#hyfm_PropertyPlantEquipmentAndLeaseRightOfUseAssetNet"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_26bce8ab-7f35-4c5a-8be9-09df9461c45b" xlink:to="loc_hyfm_PropertyPlantEquipmentAndLeaseRightOfUseAssetNet_8d8ca213-7bc3-4319-b64c-db007b9ebc99" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/BUSINESSCOMBINATIONS" xlink:type="simple" xlink:href="hyfm-20220630.xsd#BUSINESSCOMBINATIONS"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/BUSINESSCOMBINATIONS" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_b910f4e2-cefe-4ff2-b70b-23e76b09a19a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationAndAssetAcquisitionAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationDisclosureTextBlock_eb12d53d-1f03-4bd8-9b4f-d2a5f52d4ab1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationDisclosureTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_b910f4e2-cefe-4ff2-b70b-23e76b09a19a" xlink:to="loc_us-gaap_BusinessCombinationDisclosureTextBlock_eb12d53d-1f03-4bd8-9b4f-d2a5f52d4ab1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/BUSINESSCOMBINATIONSTables" xlink:type="simple" xlink:href="hyfm-20220630.xsd#BUSINESSCOMBINATIONSTables"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/BUSINESSCOMBINATIONSTables" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_ccbd8b10-6529-4715-9427-f3f9bdd05ae0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationAndAssetAcquisitionAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_fb96ee7c-7411-4c96-941c-37ac2eb3ee3e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_ccbd8b10-6529-4715-9427-f3f9bdd05ae0" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_fb96ee7c-7411-4c96-941c-37ac2eb3ee3e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_705195d1-6c5f-455f-b5e6-48ea3b8920cb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionProFormaInformationTextBlock"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_ccbd8b10-6529-4715-9427-f3f9bdd05ae0" xlink:to="loc_us-gaap_BusinessAcquisitionProFormaInformationTextBlock_705195d1-6c5f-455f-b5e6-48ea3b8920cb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/BUSINESSCOMBINATIONSNarrativeDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#BUSINESSCOMBINATIONSNarrativeDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/BUSINESSCOMBINATIONSNarrativeDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_5f53994f-7b5a-42ac-846b-12b2ad0d55f0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationAndAssetAcquisitionAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_440fea22-a2fe-4bde-88c0-eb519cba565e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_5f53994f-7b5a-42ac-846b-12b2ad0d55f0" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_440fea22-a2fe-4bde-88c0-eb519cba565e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_cbbf6d15-8d67-498e-b984-eb3ed0968c97" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_440fea22-a2fe-4bde-88c0-eb519cba565e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_cbbf6d15-8d67-498e-b984-eb3ed0968c97" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_084011ae-b82b-410b-9676-bc73ccb961e9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_cbbf6d15-8d67-498e-b984-eb3ed0968c97" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_084011ae-b82b-410b-9676-bc73ccb961e9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_72790744-8a80-42fc-8e50-344fc267df20" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CustomerRelationshipsMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_084011ae-b82b-410b-9676-bc73ccb961e9" xlink:to="loc_us-gaap_CustomerRelationshipsMember_72790744-8a80-42fc-8e50-344fc267df20" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_TechnologyFormulationsAndRecipesMember_b3793514-0fa6-4398-9fc5-444fea6fadc7" xlink:href="hyfm-20220630.xsd#hyfm_TechnologyFormulationsAndRecipesMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_084011ae-b82b-410b-9676-bc73ccb961e9" xlink:to="loc_hyfm_TechnologyFormulationsAndRecipesMember_b3793514-0fa6-4398-9fc5-444fea6fadc7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_64f7f974-c0b5-4261-97d1-d29ce3478f51" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TradeNamesMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_084011ae-b82b-410b-9676-bc73ccb961e9" xlink:to="loc_us-gaap_TradeNamesMember_64f7f974-c0b5-4261-97d1-d29ce3478f51" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_9130775e-53d5-44bd-864b-dfb39385b0f2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAxis"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_440fea22-a2fe-4bde-88c0-eb519cba565e" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_9130775e-53d5-44bd-864b-dfb39385b0f2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_1d5b76fd-91f2-4c16-a586-a0ba13cd2519" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_9130775e-53d5-44bd-864b-dfb39385b0f2" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_1d5b76fd-91f2-4c16-a586-a0ba13cd2519" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_Field16LLCMember_4f5feb19-f1ab-488a-b831-456902e95873" xlink:href="hyfm-20220630.xsd#hyfm_Field16LLCMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_1d5b76fd-91f2-4c16-a586-a0ba13cd2519" xlink:to="loc_hyfm_Field16LLCMember_4f5feb19-f1ab-488a-b831-456902e95873" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_HouseGardenIncMember_7050d508-5722-4038-a538-3f23834a370c" xlink:href="hyfm-20220630.xsd#hyfm_HouseGardenIncMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_1d5b76fd-91f2-4c16-a586-a0ba13cd2519" xlink:to="loc_hyfm_HouseGardenIncMember_7050d508-5722-4038-a538-3f23834a370c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_AuroraInnovationsLLCMember_ffd22666-17f5-4eb4-811c-06d413f72fc2" xlink:href="hyfm-20220630.xsd#hyfm_AuroraInnovationsLLCMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_1d5b76fd-91f2-4c16-a586-a0ba13cd2519" xlink:to="loc_hyfm_AuroraInnovationsLLCMember_ffd22666-17f5-4eb4-811c-06d413f72fc2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_GreenstarPlantProductsIncMember_4d6b197c-e318-4aeb-941f-5b47ae0f9426" xlink:href="hyfm-20220630.xsd#hyfm_GreenstarPlantProductsIncMember"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_1d5b76fd-91f2-4c16-a586-a0ba13cd2519" xlink:to="loc_hyfm_GreenstarPlantProductsIncMember_4d6b197c-e318-4aeb-941f-5b47ae0f9426" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_InnovativeGrowersEquipmentIncMember_949d422e-1410-4304-961e-b50169f85bc7" xlink:href="hyfm-20220630.xsd#hyfm_InnovativeGrowersEquipmentIncMember"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_1d5b76fd-91f2-4c16-a586-a0ba13cd2519" xlink:to="loc_hyfm_InnovativeGrowersEquipmentIncMember_949d422e-1410-4304-961e-b50169f85bc7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_2dcc901b-7500-4435-a5f4-3b3b86ad8dec" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_440fea22-a2fe-4bde-88c0-eb519cba565e" xlink:to="loc_srt_RangeAxis_2dcc901b-7500-4435-a5f4-3b3b86ad8dec" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_b3997800-92e5-46f6-abfb-de8d75a00cba" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_2dcc901b-7500-4435-a5f4-3b3b86ad8dec" xlink:to="loc_srt_RangeMember_b3997800-92e5-46f6-abfb-de8d75a00cba" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_659913f9-c94b-4766-b80c-3ee364326799" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_b3997800-92e5-46f6-abfb-de8d75a00cba" xlink:to="loc_srt_MinimumMember_659913f9-c94b-4766-b80c-3ee364326799" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_8bac6d5b-2609-47f1-9423-173e9492a2a0" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_b3997800-92e5-46f6-abfb-de8d75a00cba" xlink:to="loc_srt_MaximumMember_8bac6d5b-2609-47f1-9423-173e9492a2a0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueAxis_2b2af159-9fe4-4429-9eec-ce5e8ab50f08" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ValuationTechniqueAxis"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_440fea22-a2fe-4bde-88c0-eb519cba565e" xlink:to="loc_us-gaap_ValuationTechniqueAxis_2b2af159-9fe4-4429-9eec-ce5e8ab50f08" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_98fda7a0-e985-41c0-ae7b-b3cb4771b4a5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ValuationTechniqueDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ValuationTechniqueAxis_2b2af159-9fe4-4429-9eec-ce5e8ab50f08" xlink:to="loc_us-gaap_ValuationTechniqueDomain_98fda7a0-e985-41c0-ae7b-b3cb4771b4a5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDiscountedCashFlowMember_f931fa0d-0308-4dfb-8025-551922439b50" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ValuationTechniqueDiscountedCashFlowMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ValuationTechniqueDomain_98fda7a0-e985-41c0-ae7b-b3cb4771b4a5" xlink:to="loc_us-gaap_ValuationTechniqueDiscountedCashFlowMember_f931fa0d-0308-4dfb-8025-551922439b50" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis_fc089482-a1ba-417f-bd0e-ef8ec0acdca0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MeasurementInputTypeAxis"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_440fea22-a2fe-4bde-88c0-eb519cba565e" xlink:to="loc_us-gaap_MeasurementInputTypeAxis_fc089482-a1ba-417f-bd0e-ef8ec0acdca0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_fce128eb-38cc-4707-902e-1e5c1b6860dd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MeasurementInputTypeDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_fc089482-a1ba-417f-bd0e-ef8ec0acdca0" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_fce128eb-38cc-4707-902e-1e5c1b6860dd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputDiscountRateMember_da4b7c48-4055-42ad-8097-066332b25fb2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MeasurementInputDiscountRateMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_fce128eb-38cc-4707-902e-1e5c1b6860dd" xlink:to="loc_us-gaap_MeasurementInputDiscountRateMember_da4b7c48-4055-42ad-8097-066332b25fb2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionLineItems"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_440fea22-a2fe-4bde-88c0-eb519cba565e" xlink:to="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfBusinessesAcquired_fcac6047-0391-404f-aa61-e1063200126d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfBusinessesAcquired"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_us-gaap_NumberOfBusinessesAcquired_fcac6047-0391-404f-aa61-e1063200126d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_AmortizationOfIntangibleAssetsAdditional_db81488c-023b-4cc7-944b-f1d285656251" xlink:href="hyfm-20220630.xsd#hyfm_AmortizationOfIntangibleAssetsAdditional"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_hyfm_AmortizationOfIntangibleAssetsAdditional_db81488c-023b-4cc7-944b-f1d285656251" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_8a1be1df-e87d-40b3-98e4-e5934c5caca9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_8a1be1df-e87d-40b3-98e4-e5934c5caca9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_5ae799f7-541b-4ced-bb8c-46a9a0fc757c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_5ae799f7-541b-4ced-bb8c-46a9a0fc757c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_9e9cfdbc-e39c-4728-9bad-7335181c8b3a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_9e9cfdbc-e39c-4728-9bad-7335181c8b3a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_a9b74c05-595a-4799-8df3-366bbeeab390" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_a9b74c05-595a-4799-8df3-366bbeeab390" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_8b73afd6-9de0-49df-92d1-fc8688d5a78b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_8b73afd6-9de0-49df-92d1-fc8688d5a78b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_b0095916-bfd7-4ee4-b811-5edd32023f81" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_b0095916-bfd7-4ee4-b811-5edd32023f81" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh_6bb024f4-4c8f-46aa-be9b-63f4eeffaff8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh"/>
<link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh_6bb024f4-4c8f-46aa-be9b-63f4eeffaff8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueIncrementalAmountOverThreshold_76014baa-45d8-422a-bd94-6221d028fb84" xlink:href="hyfm-20220630.xsd#hyfm_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueIncrementalAmountOverThreshold"/>
<link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_hyfm_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueIncrementalAmountOverThreshold_76014baa-45d8-422a-bd94-6221d028fb84" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueThreshold_528bd75a-afde-4a2b-9cb8-f835477b2672" xlink:href="hyfm-20220630.xsd#hyfm_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueThreshold"/>
<link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_hyfm_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueThreshold_528bd75a-afde-4a2b-9cb8-f835477b2672" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueSalesThreshold_fc7db0ec-0dc3-4f58-b111-9dd82edb32e9" xlink:href="hyfm-20220630.xsd#hyfm_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueSalesThreshold"/>
<link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_hyfm_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueSalesThreshold_fc7db0ec-0dc3-4f58-b111-9dd82edb32e9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_d7253c77-3eb4-42aa-ba83-50b27abc5fff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred"/>
<link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_d7253c77-3eb4-42aa-ba83-50b27abc5fff" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_BusinessCombinationConsiderationTransferredForgivenessOfAccountsPayable_9958dc19-91e1-4048-8d0e-878f902845a8" xlink:href="hyfm-20220630.xsd#hyfm_BusinessCombinationConsiderationTransferredForgivenessOfAccountsPayable"/>
<link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_hyfm_BusinessCombinationConsiderationTransferredForgivenessOfAccountsPayable_9958dc19-91e1-4048-8d0e-878f902845a8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_BusinessCombinationContingentConsiderationArrangementsExcessEBITDA_921dc276-2f89-45da-937c-2120affd6148" xlink:href="hyfm-20220630.xsd#hyfm_BusinessCombinationContingentConsiderationArrangementsExcessEBITDA"/>
<link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_hyfm_BusinessCombinationContingentConsiderationArrangementsExcessEBITDA_921dc276-2f89-45da-937c-2120affd6148" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_BusinessCombinationContingentConsiderationArrangementsMultiplier_128917bc-089d-4680-80c4-307468f40c62" xlink:href="hyfm-20220630.xsd#hyfm_BusinessCombinationContingentConsiderationArrangementsMultiplier"/>
<link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_hyfm_BusinessCombinationContingentConsiderationArrangementsMultiplier_128917bc-089d-4680-80c4-307468f40c62" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityMeasurementInput_6f40501d-fc13-48ab-b1de-6f95e783368a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationContingentConsiderationLiabilityMeasurementInput"/>
<link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityMeasurementInput_6f40501d-fc13-48ab-b1de-6f95e783368a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_BusinessCombinationConsiderationTransferredForgivenessOfContractAsset_e32ce6d9-50ed-4879-a4e5-ef5cea8373e2" xlink:href="hyfm-20220630.xsd#hyfm_BusinessCombinationConsiderationTransferredForgivenessOfContractAsset"/>
<link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5aa1ca1c-3463-43b9-ae33-528b0be13a60" xlink:to="loc_hyfm_BusinessCombinationConsiderationTransferredForgivenessOfContractAsset_e32ce6d9-50ed-4879-a4e5-ef5cea8373e2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/BUSINESSCOMBINATIONSComponentsDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#BUSINESSCOMBINATIONSComponentsDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/BUSINESSCOMBINATIONSComponentsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_2054c029-da6c-407c-8868-995f3b8ee15e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationAndAssetAcquisitionAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_e9fda084-2296-49d6-8fd8-a915644e7341" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_2054c029-da6c-407c-8868-995f3b8ee15e" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_e9fda084-2296-49d6-8fd8-a915644e7341" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_8cf8e217-ecf4-4260-8a25-c7c7713ad0ae" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_e9fda084-2296-49d6-8fd8-a915644e7341" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_8cf8e217-ecf4-4260-8a25-c7c7713ad0ae" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_38a0f02d-021a-4041-b204-781bec6be1c5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_8cf8e217-ecf4-4260-8a25-c7c7713ad0ae" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_38a0f02d-021a-4041-b204-781bec6be1c5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_Field16LLCMember_8593ce3a-f2a7-4a5e-858b-32aa69c192ea" xlink:href="hyfm-20220630.xsd#hyfm_Field16LLCMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_38a0f02d-021a-4041-b204-781bec6be1c5" xlink:to="loc_hyfm_Field16LLCMember_8593ce3a-f2a7-4a5e-858b-32aa69c192ea" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_HouseGardenIncMember_5791c434-622d-4ff1-b499-750a58d907e8" xlink:href="hyfm-20220630.xsd#hyfm_HouseGardenIncMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_38a0f02d-021a-4041-b204-781bec6be1c5" xlink:to="loc_hyfm_HouseGardenIncMember_5791c434-622d-4ff1-b499-750a58d907e8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_AuroraInnovationsLLCMember_fe069b8b-ad49-491f-b635-45d72113d620" xlink:href="hyfm-20220630.xsd#hyfm_AuroraInnovationsLLCMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_38a0f02d-021a-4041-b204-781bec6be1c5" xlink:to="loc_hyfm_AuroraInnovationsLLCMember_fe069b8b-ad49-491f-b635-45d72113d620" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_GreenstarPlantProductsIncMember_34d4eed7-51ce-48fa-9d13-2d09496e9196" xlink:href="hyfm-20220630.xsd#hyfm_GreenstarPlantProductsIncMember"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_38a0f02d-021a-4041-b204-781bec6be1c5" xlink:to="loc_hyfm_GreenstarPlantProductsIncMember_34d4eed7-51ce-48fa-9d13-2d09496e9196" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_InnovativeGrowersEquipmentIncMember_0b9c811c-156d-4515-90e3-88f0042a69fd" xlink:href="hyfm-20220630.xsd#hyfm_InnovativeGrowersEquipmentIncMember"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_38a0f02d-021a-4041-b204-781bec6be1c5" xlink:to="loc_hyfm_InnovativeGrowersEquipmentIncMember_0b9c811c-156d-4515-90e3-88f0042a69fd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_8899ec0b-cf64-436d-81f5-1af1e4c1af14" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_e9fda084-2296-49d6-8fd8-a915644e7341" xlink:to="loc_us-gaap_BusinessAcquisitionLineItems_8899ec0b-cf64-436d-81f5-1af1e4c1af14" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_0c38f50c-01a1-439d-b5da-a26e87394eab" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8899ec0b-cf64-436d-81f5-1af1e4c1af14" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_0c38f50c-01a1-439d-b5da-a26e87394eab" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_7e512fec-d605-411e-bf13-c87bbc63f841" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8899ec0b-cf64-436d-81f5-1af1e4c1af14" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_7e512fec-d605-411e-bf13-c87bbc63f841" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_50c7d84c-bb27-4b0d-8861-41d346632f8d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8899ec0b-cf64-436d-81f5-1af1e4c1af14" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_50c7d84c-bb27-4b0d-8861-41d346632f8d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_BusinessCombinationConsiderationTransferredForgivenessOfAccountsAssetsAndLiabilities_8685776a-1ee2-495f-89ac-ea8485965ec0" xlink:href="hyfm-20220630.xsd#hyfm_BusinessCombinationConsiderationTransferredForgivenessOfAccountsAssetsAndLiabilities"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8899ec0b-cf64-436d-81f5-1af1e4c1af14" xlink:to="loc_hyfm_BusinessCombinationConsiderationTransferredForgivenessOfAccountsAssetsAndLiabilities_8685776a-1ee2-495f-89ac-ea8485965ec0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_0578dcdc-dd4d-4303-bcfc-33ac6f8e58e1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8899ec0b-cf64-436d-81f5-1af1e4c1af14" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_0578dcdc-dd4d-4303-bcfc-33ac6f8e58e1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_c4b7419f-046f-4b3a-9a11-8ed895fcdee7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_8899ec0b-cf64-436d-81f5-1af1e4c1af14" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_c4b7419f-046f-4b3a-9a11-8ed895fcdee7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/BUSINESSCOMBINATIONSAllocationDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#BUSINESSCOMBINATIONSAllocationDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/BUSINESSCOMBINATIONSAllocationDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_aa875479-b1e2-4799-9ca2-87d554872fc6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationAndAssetAcquisitionAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_6fa52302-1ca9-408d-b708-ca92840b9b1b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_aa875479-b1e2-4799-9ca2-87d554872fc6" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_6fa52302-1ca9-408d-b708-ca92840b9b1b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_b4064e57-8b5f-42e6-9afa-f5a1b2f3e304" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_6fa52302-1ca9-408d-b708-ca92840b9b1b" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_b4064e57-8b5f-42e6-9afa-f5a1b2f3e304" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_00cb15d2-defd-4550-97ae-79154019091c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_b4064e57-8b5f-42e6-9afa-f5a1b2f3e304" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_00cb15d2-defd-4550-97ae-79154019091c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_Field16LLCMember_780daaf7-cd22-42d7-a321-0f5d8e88452d" xlink:href="hyfm-20220630.xsd#hyfm_Field16LLCMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_00cb15d2-defd-4550-97ae-79154019091c" xlink:to="loc_hyfm_Field16LLCMember_780daaf7-cd22-42d7-a321-0f5d8e88452d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_HouseGardenIncMember_a7147241-4833-41ff-b750-863bf2673fc1" xlink:href="hyfm-20220630.xsd#hyfm_HouseGardenIncMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_00cb15d2-defd-4550-97ae-79154019091c" xlink:to="loc_hyfm_HouseGardenIncMember_a7147241-4833-41ff-b750-863bf2673fc1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_AuroraInnovationsLLCMember_01126817-250e-440f-b21a-47861c0fc3b4" xlink:href="hyfm-20220630.xsd#hyfm_AuroraInnovationsLLCMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_00cb15d2-defd-4550-97ae-79154019091c" xlink:to="loc_hyfm_AuroraInnovationsLLCMember_01126817-250e-440f-b21a-47861c0fc3b4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_GreenstarPlantProductsIncMember_cafa4ef2-3087-46ae-9a03-4308d6e050f5" xlink:href="hyfm-20220630.xsd#hyfm_GreenstarPlantProductsIncMember"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_00cb15d2-defd-4550-97ae-79154019091c" xlink:to="loc_hyfm_GreenstarPlantProductsIncMember_cafa4ef2-3087-46ae-9a03-4308d6e050f5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_InnovativeGrowersEquipmentIncMember_2dad9e25-f3e8-43d0-8522-821056e9ceb9" xlink:href="hyfm-20220630.xsd#hyfm_InnovativeGrowersEquipmentIncMember"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_00cb15d2-defd-4550-97ae-79154019091c" xlink:to="loc_hyfm_InnovativeGrowersEquipmentIncMember_2dad9e25-f3e8-43d0-8522-821056e9ceb9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_98ac4164-baf9-4703-b71e-2af19b0bcdd0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_6fa52302-1ca9-408d-b708-ca92840b9b1b" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_98ac4164-baf9-4703-b71e-2af19b0bcdd0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2746aa67-8f43-4df0-8e5f-0d7f68661c8c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_98ac4164-baf9-4703-b71e-2af19b0bcdd0" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2746aa67-8f43-4df0-8e5f-0d7f68661c8c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_50be7b3d-3a0b-459e-beed-33c1f51b197f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherIntangibleAssetsMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2746aa67-8f43-4df0-8e5f-0d7f68661c8c" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_50be7b3d-3a0b-459e-beed-33c1f51b197f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_33a9ff49-0b72-4b07-bf0c-d7b83bda11df" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CustomerRelationshipsMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2746aa67-8f43-4df0-8e5f-0d7f68661c8c" xlink:to="loc_us-gaap_CustomerRelationshipsMember_33a9ff49-0b72-4b07-bf0c-d7b83bda11df" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TrademarksAndTradeNamesMember_df76a6f5-3138-4855-830f-089e3bd96369" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TrademarksAndTradeNamesMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2746aa67-8f43-4df0-8e5f-0d7f68661c8c" xlink:to="loc_us-gaap_TrademarksAndTradeNamesMember_df76a6f5-3138-4855-830f-089e3bd96369" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_TechnologyFormulationsAndRecipesMember_ffe46008-6e1e-4ffb-a7c3-133fc39ee5c4" xlink:href="hyfm-20220630.xsd#hyfm_TechnologyFormulationsAndRecipesMember"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2746aa67-8f43-4df0-8e5f-0d7f68661c8c" xlink:to="loc_hyfm_TechnologyFormulationsAndRecipesMember_ffe46008-6e1e-4ffb-a7c3-133fc39ee5c4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionLineItems"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_6fa52302-1ca9-408d-b708-ca92840b9b1b" xlink:to="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_90c8556a-ebe4-45e5-9816-6e206c7ee189" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables_90c8556a-ebe4-45e5-9816-6e206c7ee189" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_0a4db5dd-d611-42b4-8cc3-3cff84799f11" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory_0a4db5dd-d611-42b4-8cc3-3cff84799f11" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_4910c053-2392-4315-8154-f2b0863d785f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets_4910c053-2392-4315-8154-f2b0863d785f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_23750a94-198a-49ed-95bd-23dedf212418" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_23750a94-198a-49ed-95bd-23dedf212418" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset_3ba46989-c7d9-4621-b7b5-1b839535afc4" xlink:href="hyfm-20220630.xsd#hyfm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_hyfm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAsset_3ba46989-c7d9-4621-b7b5-1b839535afc4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_feca169c-ea36-417f-995f-4679dad25f8f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_feca169c-ea36-417f-995f-4679dad25f8f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_2bef47ae-7a27-46cc-ac5e-c1066e8a00ae" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_2bef47ae-7a27-46cc-ac5e-c1066e8a00ae" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedLiabilitiesAndOtherLiabilities_800f8f0a-c31e-4ace-8bcb-7e6f5ef603b3" xlink:href="hyfm-20220630.xsd#hyfm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedLiabilitiesAndOtherLiabilities"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_hyfm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedLiabilitiesAndOtherLiabilities_800f8f0a-c31e-4ace-8bcb-7e6f5ef603b3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOperatingLease_ef2fa24c-4644-48d1-8ee6-f1af1214eead" xlink:href="hyfm-20220630.xsd#hyfm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOperatingLease"/>
<link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_hyfm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOperatingLease_ef2fa24c-4644-48d1-8ee6-f1af1214eead" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt_8bd534d9-1e9b-4d59-a447-815e783bfd3b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt"/>
<link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt_8bd534d9-1e9b-4d59-a447-815e783bfd3b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_bdb8834d-c7fb-4865-b1a3-138fb8dc8cad" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities"/>
<link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities_bdb8834d-c7fb-4865-b1a3-138fb8dc8cad" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOperatingLease_7bdacb59-a1b1-4007-94a6-930558f65ed1" xlink:href="hyfm-20220630.xsd#hyfm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOperatingLease"/>
<link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_hyfm_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOperatingLease_7bdacb59-a1b1-4007-94a6-930558f65ed1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_681ae35d-07f6-4e0f-acbf-bdd63162db65" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt"/>
<link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_681ae35d-07f6-4e0f-acbf-bdd63162db65" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_1e4f9e84-d57f-47ae-909a-2b912d808255" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther"/>
<link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_1e4f9e84-d57f-47ae-909a-2b912d808255" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_BusinessCombinationRecognizedIdentifiableAssetsExcludingIntangibleAssetsAcquiredAndLiabilitiesAssumedNet_9ad8c585-273c-4876-90f5-4381ad2d6b14" xlink:href="hyfm-20220630.xsd#hyfm_BusinessCombinationRecognizedIdentifiableAssetsExcludingIntangibleAssetsAcquiredAndLiabilitiesAssumedNet"/>
<link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_hyfm_BusinessCombinationRecognizedIdentifiableAssetsExcludingIntangibleAssetsAcquiredAndLiabilitiesAssumedNet_9ad8c585-273c-4876-90f5-4381ad2d6b14" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_ccb4431f-6973-4b1e-8d43-94cc116530c2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
<link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_ccb4431f-6973-4b1e-8d43-94cc116530c2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_2bc2b33f-26a3-406d-bfbf-ed625a4599b8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
<link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_us-gaap_Goodwill_2bc2b33f-26a3-406d-bfbf-ed625a4599b8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_2efc051a-5a8c-45a4-97d7-bd0261f16a2a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet"/>
<link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_5b831988-8ea7-4e1e-b80c-eaffe5a4bc54" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_2efc051a-5a8c-45a4-97d7-bd0261f16a2a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/BUSINESSCOMBINATIONSProFormaDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#BUSINESSCOMBINATIONSProFormaDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/BUSINESSCOMBINATIONSProFormaDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_5b8f98eb-378a-48b6-bd99-990decc79d92" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationAndAssetAcquisitionAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_e10fe9c1-fad1-4249-951f-3f1da0e0154e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionsProFormaRevenue"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_5b8f98eb-378a-48b6-bd99-990decc79d92" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaRevenue_e10fe9c1-fad1-4249-951f-3f1da0e0154e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_8e457807-5243-4419-bba5-bedb79d9e599" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationAndAssetAcquisitionAbstract_5b8f98eb-378a-48b6-bd99-990decc79d92" xlink:to="loc_us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_8e457807-5243-4419-bba5-bedb79d9e599" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNET" xlink:type="simple" xlink:href="hyfm-20220630.xsd#GOODWILLANDINTANGIBLEASSETSNET"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNET" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_c0ce5ce5-7dc5-471f-8645-c1e0f54eff55" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_c8d313a4-8ac2-4e34-9e72-5a3df4d05b34" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_c0ce5ce5-7dc5-471f-8645-c1e0f54eff55" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_c8d313a4-8ac2-4e34-9e72-5a3df4d05b34" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNETTables" xlink:type="simple" xlink:href="hyfm-20220630.xsd#GOODWILLANDINTANGIBLEASSETSNETTables"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNETTables" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_cbae319e-e242-41ce-bd4a-0f1105a1ab37" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTextBlock_57294df9-345d-4b33-ae0e-2ec1d3888074" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfGoodwillTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_cbae319e-e242-41ce-bd4a-0f1105a1ab37" xlink:to="loc_us-gaap_ScheduleOfGoodwillTextBlock_57294df9-345d-4b33-ae0e-2ec1d3888074" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlock_cf7a3f88-2b14-4e1a-b92f-819da4968db4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlock"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_cbae319e-e242-41ce-bd4a-0f1105a1ab37" xlink:to="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTableTextBlock_cf7a3f88-2b14-4e1a-b92f-819da4968db4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_fe9cc58e-d728-48ea-9d28-bc7d367abb6e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_cbae319e-e242-41ce-bd4a-0f1105a1ab37" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_fe9cc58e-d728-48ea-9d28-bc7d367abb6e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_8bf1e9a2-ee9a-47c2-8fbc-a8c297d0b4ec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_cbae319e-e242-41ce-bd4a-0f1105a1ab37" xlink:to="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_8bf1e9a2-ee9a-47c2-8fbc-a8c297d0b4ec" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNETNarrativeDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#GOODWILLANDINTANGIBLEASSETSNETNarrativeDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNETNarrativeDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_ea5ca9bd-2a0f-43ff-8af6-b22058273b05" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_1e600e58-7677-45ea-9aa1-1066d6085123" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfGoodwillTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_ea5ca9bd-2a0f-43ff-8af6-b22058273b05" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_1e600e58-7677-45ea-9aa1-1066d6085123" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_5e5ab6db-2892-4274-9654-559d1d4f92c5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_1e600e58-7677-45ea-9aa1-1066d6085123" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_5e5ab6db-2892-4274-9654-559d1d4f92c5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_e4554654-62cb-4ec0-be20-287b317cbfdf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_5e5ab6db-2892-4274-9654-559d1d4f92c5" xlink:to="loc_us-gaap_SegmentDomain_e4554654-62cb-4ec0-be20-287b317cbfdf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_UnitedStatesSegmentMember_229a41a6-6971-43d2-96df-7ae49de9830f" xlink:href="hyfm-20220630.xsd#hyfm_UnitedStatesSegmentMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_e4554654-62cb-4ec0-be20-287b317cbfdf" xlink:to="loc_hyfm_UnitedStatesSegmentMember_229a41a6-6971-43d2-96df-7ae49de9830f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_CanadaSegmentMember_dcf9ad0a-1523-46d9-95f4-cea67fd5bf08" xlink:href="hyfm-20220630.xsd#hyfm_CanadaSegmentMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentDomain_e4554654-62cb-4ec0-be20-287b317cbfdf" xlink:to="loc_hyfm_CanadaSegmentMember_dcf9ad0a-1523-46d9-95f4-cea67fd5bf08" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_62b7bd5c-329a-40ca-b079-932c4f622133" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_1e600e58-7677-45ea-9aa1-1066d6085123" xlink:to="loc_us-gaap_GoodwillLineItems_62b7bd5c-329a-40ca-b079-932c4f622133" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_17f9319f-a114-4983-ba8d-6cc5b0df6e33" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillImpairmentLoss"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillLineItems_62b7bd5c-329a-40ca-b079-932c4f622133" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_17f9319f-a114-4983-ba8d-6cc5b0df6e33" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_28a07f27-921b-46ac-a8ef-9055044a0af4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillLineItems_62b7bd5c-329a-40ca-b079-932c4f622133" xlink:to="loc_us-gaap_Goodwill_28a07f27-921b-46ac-a8ef-9055044a0af4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_95196cf7-96ee-47df-9fa0-66ec7044f3ef" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_ea5ca9bd-2a0f-43ff-8af6-b22058273b05" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_95196cf7-96ee-47df-9fa0-66ec7044f3ef" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfBusinessesAcquired_6ef1f784-9647-4193-adcf-c946ec4de5ce" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfBusinessesAcquired"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_ea5ca9bd-2a0f-43ff-8af6-b22058273b05" xlink:to="loc_us-gaap_NumberOfBusinessesAcquired_6ef1f784-9647-4193-adcf-c946ec4de5ce" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNETGoodwillDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#GOODWILLANDINTANGIBLEASSETSNETGoodwillDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNETGoodwillDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_9bc4614e-36d1-4dc1-a789-f83ec5ab6746" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_b27cdd7f-967b-44a2-b66c-0b827e9c577c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfGoodwillTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_9bc4614e-36d1-4dc1-a789-f83ec5ab6746" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_b27cdd7f-967b-44a2-b66c-0b827e9c577c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_1afa95a3-85fe-4268-b0f2-99cbccee8811" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_b27cdd7f-967b-44a2-b66c-0b827e9c577c" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_1afa95a3-85fe-4268-b0f2-99cbccee8811" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_fc1678fc-31f9-427d-9d20-ba3ef27c527d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_1afa95a3-85fe-4268-b0f2-99cbccee8811" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_fc1678fc-31f9-427d-9d20-ba3ef27c527d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_InnovativeGrowersEquipmentIncMember_0d38c539-0c42-4996-8c99-690ea8d345a6" xlink:href="hyfm-20220630.xsd#hyfm_InnovativeGrowersEquipmentIncMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_fc1678fc-31f9-427d-9d20-ba3ef27c527d" xlink:to="loc_hyfm_InnovativeGrowersEquipmentIncMember_0d38c539-0c42-4996-8c99-690ea8d345a6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_GreenstarPlantProductsIncMember_edefd1d5-46dd-454d-b3a2-5c02faacd930" xlink:href="hyfm-20220630.xsd#hyfm_GreenstarPlantProductsIncMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_fc1678fc-31f9-427d-9d20-ba3ef27c527d" xlink:to="loc_hyfm_GreenstarPlantProductsIncMember_edefd1d5-46dd-454d-b3a2-5c02faacd930" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_SeriesOfOtherBusinessAcquisitionsMember_29e7fc2e-f6f7-409e-ae0e-b4f76b20f6e0" xlink:href="hyfm-20220630.xsd#hyfm_SeriesOfOtherBusinessAcquisitionsMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_fc1678fc-31f9-427d-9d20-ba3ef27c527d" xlink:to="loc_hyfm_SeriesOfOtherBusinessAcquisitionsMember_29e7fc2e-f6f7-409e-ae0e-b4f76b20f6e0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_bdfca3d4-cad8-4245-bf41-cd3d36b457f1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_b27cdd7f-967b-44a2-b66c-0b827e9c577c" xlink:to="loc_us-gaap_GoodwillLineItems_bdfca3d4-cad8-4245-bf41-cd3d36b457f1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_d91a7278-0536-4ba5-b373-448e89663e7b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillRollForward"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillLineItems_bdfca3d4-cad8-4245-bf41-cd3d36b457f1" xlink:to="loc_us-gaap_GoodwillRollForward_d91a7278-0536-4ba5-b373-448e89663e7b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_fb46b189-079c-4bb5-830c-90eed95fdb5f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillRollForward_d91a7278-0536-4ba5-b373-448e89663e7b" xlink:to="loc_us-gaap_Goodwill_fb46b189-079c-4bb5-830c-90eed95fdb5f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_f48ec78b-5ab9-4d29-b897-212b69ef9cbc" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillRollForward_d91a7278-0536-4ba5-b373-448e89663e7b" xlink:to="loc_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_f48ec78b-5ab9-4d29-b897-212b69ef9cbc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_67874875-f96e-448f-89e7-ed74ce9335d4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetImpairmentCharges"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillRollForward_d91a7278-0536-4ba5-b373-448e89663e7b" xlink:to="loc_us-gaap_AssetImpairmentCharges_67874875-f96e-448f-89e7-ed74ce9335d4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_b7f0e197-c7bb-40b5-9d09-c7be8e9c55d4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillRollForward_d91a7278-0536-4ba5-b373-448e89663e7b" xlink:to="loc_us-gaap_Goodwill_b7f0e197-c7bb-40b5-9d09-c7be8e9c55d4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNETIntangibleAssetsnetDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#GOODWILLANDINTANGIBLEASSETSNETIntangibleAssetsnetDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNETIntangibleAssetsnetDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_0c8a63fa-b89e-42ba-8751-a38d75d663af" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b1bb75d6-e596-4167-9896-b31ce652f0aa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_0c8a63fa-b89e-42ba-8751-a38d75d663af" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b1bb75d6-e596-4167-9896-b31ce652f0aa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_0d638380-2131-498b-9414-fe56607cd935" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b1bb75d6-e596-4167-9896-b31ce652f0aa" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_0d638380-2131-498b-9414-fe56607cd935" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_292620cd-70bf-4ea5-9856-0ea8ee36cbfb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_0d638380-2131-498b-9414-fe56607cd935" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_292620cd-70bf-4ea5-9856-0ea8ee36cbfb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_2e1e65f0-bd76-43a2-9191-69558a9e353c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ComputerSoftwareIntangibleAssetMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_292620cd-70bf-4ea5-9856-0ea8ee36cbfb" xlink:to="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_2e1e65f0-bd76-43a2-9191-69558a9e353c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_d03a085c-b822-4f80-938b-ce2f480613f6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CustomerRelationshipsMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_292620cd-70bf-4ea5-9856-0ea8ee36cbfb" xlink:to="loc_us-gaap_CustomerRelationshipsMember_d03a085c-b822-4f80-938b-ce2f480613f6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_TechnologyFormulationsAndRecipesMember_39de5e10-4301-4ccf-a460-e4bf72eedb69" xlink:href="hyfm-20220630.xsd#hyfm_TechnologyFormulationsAndRecipesMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_292620cd-70bf-4ea5-9856-0ea8ee36cbfb" xlink:to="loc_hyfm_TechnologyFormulationsAndRecipesMember_39de5e10-4301-4ccf-a460-e4bf72eedb69" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_aff4664b-33d6-4489-9be8-d4c920703ac2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TradeNamesMember"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_292620cd-70bf-4ea5-9856-0ea8ee36cbfb" xlink:to="loc_us-gaap_TradeNamesMember_aff4664b-33d6-4489-9be8-d4c920703ac2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_ee33c796-9ba2-4e12-86c4-7ed915e1836d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherIntangibleAssetsMember"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_292620cd-70bf-4ea5-9856-0ea8ee36cbfb" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_ee33c796-9ba2-4e12-86c4-7ed915e1836d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_db0b9516-42eb-49c1-a89e-33e25fa0e478" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b1bb75d6-e596-4167-9896-b31ce652f0aa" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_db0b9516-42eb-49c1-a89e-33e25fa0e478" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_5665cb4f-83d8-4a15-a699-4b7c9e286142" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_db0b9516-42eb-49c1-a89e-33e25fa0e478" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_5665cb4f-83d8-4a15-a699-4b7c9e286142" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_2b829e8a-9df7-4100-a169-71af52a290f5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_db0b9516-42eb-49c1-a89e-33e25fa0e478" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_2b829e8a-9df7-4100-a169-71af52a290f5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_94072992-414d-4009-86d5-8927d7bd505d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_db0b9516-42eb-49c1-a89e-33e25fa0e478" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_94072992-414d-4009-86d5-8927d7bd505d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_b44752a8-b472-4156-9be4-f01a9908bdcf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_0c8a63fa-b89e-42ba-8751-a38d75d663af" xlink:to="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_b44752a8-b472-4156-9be4-f01a9908bdcf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_742323ba-bfab-4e05-b6f5-fa06bb213be2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_b44752a8-b472-4156-9be4-f01a9908bdcf" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_742323ba-bfab-4e05-b6f5-fa06bb213be2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0973cb11-371b-4e04-b702-4a8d23cb0061" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_742323ba-bfab-4e05-b6f5-fa06bb213be2" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0973cb11-371b-4e04-b702-4a8d23cb0061" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_99fde53d-9ec8-404d-946b-a1ee5495de4a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TradeNamesMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0973cb11-371b-4e04-b702-4a8d23cb0061" xlink:to="loc_us-gaap_TradeNamesMember_99fde53d-9ec8-404d-946b-a1ee5495de4a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_49065193-3daf-49d7-a185-fb82e90a8c58" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherIntangibleAssetsMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_0973cb11-371b-4e04-b702-4a8d23cb0061" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_49065193-3daf-49d7-a185-fb82e90a8c58" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_58264d97-8363-4af5-8dd4-3eefc71ab874" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_b44752a8-b472-4156-9be4-f01a9908bdcf" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_58264d97-8363-4af5-8dd4-3eefc71ab874" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_f1647b75-b98b-46c1-8eb7-6d44ddced744" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_58264d97-8363-4af5-8dd4-3eefc71ab874" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_f1647b75-b98b-46c1-8eb7-6d44ddced744" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_91be71c7-5f06-49d2-a261-e59c649ad787" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_0c8a63fa-b89e-42ba-8751-a38d75d663af" xlink:to="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_91be71c7-5f06-49d2-a261-e59c649ad787" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_47af3808-4e12-41d3-8c4e-a472761a979b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_0c8a63fa-b89e-42ba-8751-a38d75d663af" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_47af3808-4e12-41d3-8c4e-a472761a979b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNETIntangibleAssetsnetDetails_1" xlink:type="simple" xlink:href="hyfm-20220630.xsd#GOODWILLANDINTANGIBLEASSETSNETIntangibleAssetsnetDetails_1"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNETIntangibleAssetsnetDetails_1" xlink:type="extended"/>
<link:roleRef roleURI="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNETUsefulLifeFinitelivedIntangibleAssetsDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#GOODWILLANDINTANGIBLEASSETSNETUsefulLifeFinitelivedIntangibleAssetsDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNETUsefulLifeFinitelivedIntangibleAssetsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_18f29537-5298-432b-830d-6ac4aa0c1eba" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_f19a4bd7-8717-4ab5-a9d8-b973ae690643" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_18f29537-5298-432b-830d-6ac4aa0c1eba" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_f19a4bd7-8717-4ab5-a9d8-b973ae690643" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_2aeb6e0f-9491-4ade-bc4b-4e22b3ee6441" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_f19a4bd7-8717-4ab5-a9d8-b973ae690643" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_2aeb6e0f-9491-4ade-bc4b-4e22b3ee6441" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cfe08eca-d9e1-4ebd-a3e0-7dd8ea697fa1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_2aeb6e0f-9491-4ade-bc4b-4e22b3ee6441" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cfe08eca-d9e1-4ebd-a3e0-7dd8ea697fa1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_6387e135-bc3a-413e-ac5d-1d2b1fd22327" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ComputerSoftwareIntangibleAssetMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cfe08eca-d9e1-4ebd-a3e0-7dd8ea697fa1" xlink:to="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_6387e135-bc3a-413e-ac5d-1d2b1fd22327" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_8bfddc0b-0123-43ad-be66-1872e565b492" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CustomerRelationshipsMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cfe08eca-d9e1-4ebd-a3e0-7dd8ea697fa1" xlink:to="loc_us-gaap_CustomerRelationshipsMember_8bfddc0b-0123-43ad-be66-1872e565b492" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_TechnologyFormulationsAndRecipesMember_6b96cbd9-09f3-441f-bfed-c1927e1dca8b" xlink:href="hyfm-20220630.xsd#hyfm_TechnologyFormulationsAndRecipesMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cfe08eca-d9e1-4ebd-a3e0-7dd8ea697fa1" xlink:to="loc_hyfm_TechnologyFormulationsAndRecipesMember_6b96cbd9-09f3-441f-bfed-c1927e1dca8b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_80a09fad-f49b-4b7d-a5bd-1f41c396daca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TradeNamesMember"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_cfe08eca-d9e1-4ebd-a3e0-7dd8ea697fa1" xlink:to="loc_us-gaap_TradeNamesMember_80a09fad-f49b-4b7d-a5bd-1f41c396daca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_53b400db-f6b6-489b-8231-38b32f7c04d7" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_f19a4bd7-8717-4ab5-a9d8-b973ae690643" xlink:to="loc_srt_RangeAxis_53b400db-f6b6-489b-8231-38b32f7c04d7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_641133d0-c939-4434-a01b-93b4f5c0f7e8" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_53b400db-f6b6-489b-8231-38b32f7c04d7" xlink:to="loc_srt_RangeMember_641133d0-c939-4434-a01b-93b4f5c0f7e8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_0c043b57-042f-462f-9515-aa7e441d5488" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_641133d0-c939-4434-a01b-93b4f5c0f7e8" xlink:to="loc_srt_MinimumMember_0c043b57-042f-462f-9515-aa7e441d5488" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_7a01376a-1c4c-4871-a47a-22deb31f9be3" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_641133d0-c939-4434-a01b-93b4f5c0f7e8" xlink:to="loc_srt_MaximumMember_7a01376a-1c4c-4871-a47a-22deb31f9be3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_WeightedAverageMember_7bda08a3-1dce-4c7b-be4c-aac3d48c6c63" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_WeightedAverageMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_641133d0-c939-4434-a01b-93b4f5c0f7e8" xlink:to="loc_srt_WeightedAverageMember_7bda08a3-1dce-4c7b-be4c-aac3d48c6c63" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ed162c00-4289-472d-8811-bd9a485dd5d3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_f19a4bd7-8717-4ab5-a9d8-b973ae690643" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ed162c00-4289-472d-8811-bd9a485dd5d3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_38ac971a-2952-4e3d-97cf-c4628dcd7bd2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ed162c00-4289-472d-8811-bd9a485dd5d3" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_38ac971a-2952-4e3d-97cf-c4628dcd7bd2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_68bd2d99-7762-4177-b8ee-9ce566acbaa6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_ed162c00-4289-472d-8811-bd9a485dd5d3" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_68bd2d99-7762-4177-b8ee-9ce566acbaa6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNETFutureAmortizationExpenseDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#GOODWILLANDINTANGIBLEASSETSNETFutureAmortizationExpenseDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/GOODWILLANDINTANGIBLEASSETSNETFutureAmortizationExpenseDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_fcccd04d-4dd0-410e-a57e-b8f27eecf0b4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_9bd58d37-3cfa-4c32-8a77-d04d4d29f5ea" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_fcccd04d-4dd0-410e-a57e-b8f27eecf0b4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_9bd58d37-3cfa-4c32-8a77-d04d4d29f5ea" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_9acc5dc2-3b3a-4875-991f-da83b9c37045" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_fcccd04d-4dd0-410e-a57e-b8f27eecf0b4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_9acc5dc2-3b3a-4875-991f-da83b9c37045" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_47af1058-e28d-44e0-8946-a3984be241e7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_fcccd04d-4dd0-410e-a57e-b8f27eecf0b4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_47af1058-e28d-44e0-8946-a3984be241e7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_860502b5-d2b7-475a-a748-5879215a775d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_fcccd04d-4dd0-410e-a57e-b8f27eecf0b4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_860502b5-d2b7-475a-a748-5879215a775d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_faa5b2e6-7973-43ca-87d7-71a33d50ddfb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_fcccd04d-4dd0-410e-a57e-b8f27eecf0b4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_faa5b2e6-7973-43ca-87d7-71a33d50ddfb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_551c2a61-7ca4-4316-8501-653ad7047bcd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_fcccd04d-4dd0-410e-a57e-b8f27eecf0b4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_551c2a61-7ca4-4316-8501-653ad7047bcd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_c4f4b97a-324a-4f13-bed8-e16ff99f4a26" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_fcccd04d-4dd0-410e-a57e-b8f27eecf0b4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_c4f4b97a-324a-4f13-bed8-e16ff99f4a26" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/EARNINGSLOSSPERCOMMONSHAREEPS" xlink:type="simple" xlink:href="hyfm-20220630.xsd#EARNINGSLOSSPERCOMMONSHAREEPS"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/EARNINGSLOSSPERCOMMONSHAREEPS" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_ec7270ae-265c-4d73-88d8-dc26717f063f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareTextBlock_e17b92eb-bff4-49c9-ae35-a19c6e0e3879" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_ec7270ae-265c-4d73-88d8-dc26717f063f" xlink:to="loc_us-gaap_EarningsPerShareTextBlock_e17b92eb-bff4-49c9-ae35-a19c6e0e3879" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/EARNINGSLOSSPERCOMMONSHAREEPSTables" xlink:type="simple" xlink:href="hyfm-20220630.xsd#EARNINGSLOSSPERCOMMONSHAREEPSTables"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/EARNINGSLOSSPERCOMMONSHAREEPSTables" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_7ace0d06-14f0-4c65-82e3-d2c02f3f1a08" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_aee47636-c0a0-4f6c-9fb7-0e654ec2bc10" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_7ace0d06-14f0-4c65-82e3-d2c02f3f1a08" xlink:to="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_aee47636-c0a0-4f6c-9fb7-0e654ec2bc10" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_5cf46ea0-c5b0-4a3a-9b3c-eb370b9bed22" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_7ace0d06-14f0-4c65-82e3-d2c02f3f1a08" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_5cf46ea0-c5b0-4a3a-9b3c-eb370b9bed22" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/EARNINGSLOSSPERCOMMONSHAREEPSCalculationforBasicandDilutedEPSDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#EARNINGSLOSSPERCOMMONSHAREEPSCalculationforBasicandDilutedEPSDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/EARNINGSLOSSPERCOMMONSHAREEPSCalculationforBasicandDilutedEPSDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_55bd5687-00de-4105-a84b-19bef26b3c2c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareDilutedByCommonClassTable_0eb38132-7f71-46b4-a668-2bad0aee2fcf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEarningsPerShareDilutedByCommonClassTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_55bd5687-00de-4105-a84b-19bef26b3c2c" xlink:to="loc_us-gaap_ScheduleOfEarningsPerShareDilutedByCommonClassTable_0eb38132-7f71-46b4-a668-2bad0aee2fcf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_8a5692af-3477-4da4-afde-6e1ae8a7ce80" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareDilutedByCommonClassTable_0eb38132-7f71-46b4-a668-2bad0aee2fcf" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_8a5692af-3477-4da4-afde-6e1ae8a7ce80" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_ef2f6b02-c179-483a-818c-97480badceab" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_8a5692af-3477-4da4-afde-6e1ae8a7ce80" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_ef2f6b02-c179-483a-818c-97480badceab" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_a9e732a9-e7e7-4cbe-92bf-e6c3327bdf11" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_ef2f6b02-c179-483a-818c-97480badceab" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_a9e732a9-e7e7-4cbe-92bf-e6c3327bdf11" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_aa3cff53-614f-41cf-b2d8-4e8b90a95e82" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeStockOptionMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_ef2f6b02-c179-483a-818c-97480badceab" xlink:to="loc_us-gaap_EmployeeStockOptionMember_aa3cff53-614f-41cf-b2d8-4e8b90a95e82" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDilutedLineItems_979281dd-a870-4935-93d4-fce9b8d872be" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareDilutedLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareDilutedByCommonClassTable_0eb38132-7f71-46b4-a668-2bad0aee2fcf" xlink:to="loc_us-gaap_EarningsPerShareDilutedLineItems_979281dd-a870-4935-93d4-fce9b8d872be" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_93d22f29-fa6b-4bf1-a321-a7c96032a6eb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareDilutedLineItems_979281dd-a870-4935-93d4-fce9b8d872be" xlink:to="loc_us-gaap_NetIncomeLoss_93d22f29-fa6b-4bf1-a321-a7c96032a6eb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_6ea41ff3-39fd-40f2-8c4a-283810bf25b8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareDilutedLineItems_979281dd-a870-4935-93d4-fce9b8d872be" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_6ea41ff3-39fd-40f2-8c4a-283810bf25b8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToCallOptionsAndWarrants_68efba87-b2a1-4fe5-af31-847e1b3ca329" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncrementalCommonSharesAttributableToCallOptionsAndWarrants"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareDilutedLineItems_979281dd-a870-4935-93d4-fce9b8d872be" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToCallOptionsAndWarrants_68efba87-b2a1-4fe5-af31-847e1b3ca329" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_806aeb95-c970-463e-b4ab-51b301f994cf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareDilutedLineItems_979281dd-a870-4935-93d4-fce9b8d872be" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_806aeb95-c970-463e-b4ab-51b301f994cf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_db2f8475-9f7b-4734-8c5d-66319b692a61" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareDilutedLineItems_979281dd-a870-4935-93d4-fce9b8d872be" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_db2f8475-9f7b-4734-8c5d-66319b692a61" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_e5207a59-ede7-4f0b-a973-e38ced5f0486" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareBasic"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareDilutedLineItems_979281dd-a870-4935-93d4-fce9b8d872be" xlink:to="loc_us-gaap_EarningsPerShareBasic_e5207a59-ede7-4f0b-a973-e38ced5f0486" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_4a9ba189-ec5d-48bd-af27-8164ed9d1e51" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareDiluted"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareDilutedLineItems_979281dd-a870-4935-93d4-fce9b8d872be" xlink:to="loc_us-gaap_EarningsPerShareDiluted_4a9ba189-ec5d-48bd-af27-8164ed9d1e51" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/EARNINGSLOSSPERCOMMONSHAREEPSAntidilutiveDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#EARNINGSLOSSPERCOMMONSHAREEPSAntidilutiveDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/EARNINGSLOSSPERCOMMONSHAREEPSAntidilutiveDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_0a572f44-fc74-4016-a6e3-1dac0af3b13f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_135fc6c8-52e2-450d-80a4-c4f91de8dc27" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_0a572f44-fc74-4016-a6e3-1dac0af3b13f" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_135fc6c8-52e2-450d-80a4-c4f91de8dc27" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_c7a0064b-ca9e-419e-bed9-b6385dbb1d94" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_135fc6c8-52e2-450d-80a4-c4f91de8dc27" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_c7a0064b-ca9e-419e-bed9-b6385dbb1d94" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_162f64a9-e852-4536-a5d8-b4eaef2a0b9f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_c7a0064b-ca9e-419e-bed9-b6385dbb1d94" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_162f64a9-e852-4536-a5d8-b4eaef2a0b9f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_003d69bf-cd5b-46c0-bf8e-2f522f393ece" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WarrantMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_162f64a9-e852-4536-a5d8-b4eaef2a0b9f" xlink:to="loc_us-gaap_WarrantMember_003d69bf-cd5b-46c0-bf8e-2f522f393ece" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_PerformanceStockUnitPSUsAndRestrictedStockUnitsRSUsMember_23117e63-d76a-4a0d-9356-bb33b18fd925" xlink:href="hyfm-20220630.xsd#hyfm_PerformanceStockUnitPSUsAndRestrictedStockUnitsRSUsMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_162f64a9-e852-4536-a5d8-b4eaef2a0b9f" xlink:to="loc_hyfm_PerformanceStockUnitPSUsAndRestrictedStockUnitsRSUsMember_23117e63-d76a-4a0d-9356-bb33b18fd925" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_b72108eb-6ea5-48fd-9304-ba44c455d043" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeStockOptionMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_162f64a9-e852-4536-a5d8-b4eaef2a0b9f" xlink:to="loc_us-gaap_EmployeeStockOptionMember_b72108eb-6ea5-48fd-9304-ba44c455d043" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_6a6b214a-079c-480c-a662-8ad7563cf876" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_135fc6c8-52e2-450d-80a4-c4f91de8dc27" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_6a6b214a-079c-480c-a662-8ad7563cf876" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_0d4babe5-9aca-4acc-8dce-5cfe0c7e65dd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_6a6b214a-079c-480c-a662-8ad7563cf876" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_0d4babe5-9aca-4acc-8dce-5cfe0c7e65dd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/ACCOUNTSRECEIVABLENETANDINVENTORIES" xlink:type="simple" xlink:href="hyfm-20220630.xsd#ACCOUNTSRECEIVABLENETANDINVENTORIES"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/ACCOUNTSRECEIVABLENETANDINVENTORIES" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesAbstract_27a4a573-8319-49bf-9dbb-40dcee7b093c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ReceivablesAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_AccountsReceivableNetAndInventoriesTextBlock_fa4b1986-4a2e-466a-b1bf-a707b67e0463" xlink:href="hyfm-20220630.xsd#hyfm_AccountsReceivableNetAndInventoriesTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_27a4a573-8319-49bf-9dbb-40dcee7b093c" xlink:to="loc_hyfm_AccountsReceivableNetAndInventoriesTextBlock_fa4b1986-4a2e-466a-b1bf-a707b67e0463" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/ACCOUNTSRECEIVABLENETANDINVENTORIESTables" xlink:type="simple" xlink:href="hyfm-20220630.xsd#ACCOUNTSRECEIVABLENETANDINVENTORIESTables"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/ACCOUNTSRECEIVABLENETANDINVENTORIESTables" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesAbstract_e4ad8dcc-65b0-4709-97e1-a5c849dfc88c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ReceivablesAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_f9f09fe5-7b1d-46c0-a4e1-e17c5df1ac3b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_e4ad8dcc-65b0-4709-97e1-a5c849dfc88c" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_f9f09fe5-7b1d-46c0-a4e1-e17c5df1ac3b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_fe113337-676e-4956-8f23-31a7121661e2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfInventoryCurrentTableTextBlock"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_e4ad8dcc-65b0-4709-97e1-a5c849dfc88c" xlink:to="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_fe113337-676e-4956-8f23-31a7121661e2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/ACCOUNTSRECEIVABLENETANDINVENTORIESAccountsReceivableNetDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#ACCOUNTSRECEIVABLENETANDINVENTORIESAccountsReceivableNetDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/ACCOUNTSRECEIVABLENETANDINVENTORIESAccountsReceivableNetDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesAbstract_bab3d3d5-82fb-4525-8eb4-4054aa21f7b9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ReceivablesAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_95c1bdf0-baf3-4850-b3c6-fd2c56ae39fd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableGrossCurrent"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_bab3d3d5-82fb-4525-8eb4-4054aa21f7b9" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_95c1bdf0-baf3-4850-b3c6-fd2c56ae39fd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_11600bef-3990-4332-99a2-d1c29bc82690" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_bab3d3d5-82fb-4525-8eb4-4054aa21f7b9" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_11600bef-3990-4332-99a2-d1c29bc82690" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsAndOtherReceivablesNetCurrent_2e51b67a-78c4-437b-a42a-e3090c858ac6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsAndOtherReceivablesNetCurrent"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_bab3d3d5-82fb-4525-8eb4-4054aa21f7b9" xlink:to="loc_us-gaap_AccountsAndOtherReceivablesNetCurrent_2e51b67a-78c4-437b-a42a-e3090c858ac6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_e430c37b-7ee1-438e-8e74-380c90971b57" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableNetCurrent"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_bab3d3d5-82fb-4525-8eb4-4054aa21f7b9" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_e430c37b-7ee1-438e-8e74-380c90971b57" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/ACCOUNTSRECEIVABLENETANDINVENTORIESInventoriesDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#ACCOUNTSRECEIVABLENETANDINVENTORIESInventoriesDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/ACCOUNTSRECEIVABLENETANDINVENTORIESInventoriesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesAbstract_7cfe0853-14d4-4882-93a3-f499b47e3de6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ReceivablesAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoods_fa009543-5d70-4130-a9ff-50fa8eabafe7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryFinishedGoods"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_7cfe0853-14d4-4882-93a3-f499b47e3de6" xlink:to="loc_us-gaap_InventoryFinishedGoods_fa009543-5d70-4130-a9ff-50fa8eabafe7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcess_f58ce8e8-9b78-4432-90de-45806b2d2552" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryWorkInProcess"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_7cfe0853-14d4-4882-93a3-f499b47e3de6" xlink:to="loc_us-gaap_InventoryWorkInProcess_f58ce8e8-9b78-4432-90de-45806b2d2552" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterials_8db4c194-9501-4fa2-b176-3008631464fe" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryRawMaterials"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_7cfe0853-14d4-4882-93a3-f499b47e3de6" xlink:to="loc_us-gaap_InventoryRawMaterials_8db4c194-9501-4fa2-b176-3008631464fe" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryValuationReserves_61cc422b-8a7e-4cf3-a194-45ed5f761402" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryValuationReserves"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_7cfe0853-14d4-4882-93a3-f499b47e3de6" xlink:to="loc_us-gaap_InventoryValuationReserves_61cc422b-8a7e-4cf3-a194-45ed5f761402" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_01f7deb3-7fec-40d0-b19f-8ef98950d372" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryNet"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ReceivablesAbstract_7cfe0853-14d4-4882-93a3-f499b47e3de6" xlink:to="loc_us-gaap_InventoryNet_01f7deb3-7fec-40d0-b19f-8ef98950d372" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/OPERATINGLEASES" xlink:type="simple" xlink:href="hyfm-20220630.xsd#OPERATINGLEASES"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/OPERATINGLEASES" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeasesAbstract_cb58599d-9191-4aec-8f1b-1bfd05c62a91" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeasesAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeasesTextBlock_74f227b0-8387-483e-944b-825ef64c5bae" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeasesTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_cb58599d-9191-4aec-8f1b-1bfd05c62a91" xlink:to="loc_us-gaap_LesseeOperatingLeasesTextBlock_74f227b0-8387-483e-944b-825ef64c5bae" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/OPERATINGLEASESTables" xlink:type="simple" xlink:href="hyfm-20220630.xsd#OPERATINGLEASESTables"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/OPERATINGLEASESTables" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeasesAbstract_d5b50058-bc76-46f3-92ef-625f7bb4c503" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeasesAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_AssetsAndLiabilitiesLesseeTableTextBlock_27896c85-94b6-4b51-9cb9-4ccfb14999c2" xlink:href="hyfm-20220630.xsd#hyfm_AssetsAndLiabilitiesLesseeTableTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_d5b50058-bc76-46f3-92ef-625f7bb4c503" xlink:to="loc_hyfm_AssetsAndLiabilitiesLesseeTableTextBlock_27896c85-94b6-4b51-9cb9-4ccfb14999c2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_983845fb-5e0f-472d-bdaf-793c53866dd8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_d5b50058-bc76-46f3-92ef-625f7bb4c503" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_983845fb-5e0f-472d-bdaf-793c53866dd8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedMaturityScheduleTableTextBlock_b4df18a3-d840-42a4-8691-d1581f96d748" xlink:href="hyfm-20220630.xsd#hyfm_LesseeOperatingLeaseLeaseNotYetCommencedMaturityScheduleTableTextBlock"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_d5b50058-bc76-46f3-92ef-625f7bb4c503" xlink:to="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedMaturityScheduleTableTextBlock_b4df18a3-d840-42a4-8691-d1581f96d748" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/OPERATINGLEASESNarrativeDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#OPERATINGLEASESNarrativeDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/OPERATINGLEASESNarrativeDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeasesAbstract_64c17e14-0b8a-441b-baaa-4aec2e0e42d9" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeasesAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_5268c03a-4ad4-4e2e-aac4-59b427347172" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseRenewalTerm"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64c17e14-0b8a-441b-baaa-4aec2e0e42d9" xlink:to="loc_us-gaap_LesseeOperatingLeaseRenewalTerm_5268c03a-4ad4-4e2e-aac4-59b427347172" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_41d97ce2-8aac-45fc-ae23-d3c16276a962" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseCost"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64c17e14-0b8a-441b-baaa-4aec2e0e42d9" xlink:to="loc_us-gaap_OperatingLeaseCost_41d97ce2-8aac-45fc-ae23-d3c16276a962" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_954316cd-05eb-4b17-b3ee-db88f81359f6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64c17e14-0b8a-441b-baaa-4aec2e0e42d9" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_954316cd-05eb-4b17-b3ee-db88f81359f6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_6b58b41d-f716-4677-bf93-854c2480b194" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementGeographicalAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_954316cd-05eb-4b17-b3ee-db88f81359f6" xlink:to="loc_srt_StatementGeographicalAxis_6b58b41d-f716-4677-bf93-854c2480b194" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_5a4a555d-4ed1-48b4-8cb6-52c11b05444c" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_StatementGeographicalAxis_6b58b41d-f716-4677-bf93-854c2480b194" xlink:to="loc_srt_SegmentGeographicalDomain_5a4a555d-4ed1-48b4-8cb6-52c11b05444c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_ShoemakersvillePennsylvaniaMember_17239615-4cde-446a-a5f9-a102be43becf" xlink:href="hyfm-20220630.xsd#hyfm_ShoemakersvillePennsylvaniaMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_SegmentGeographicalDomain_5a4a555d-4ed1-48b4-8cb6-52c11b05444c" xlink:to="loc_hyfm_ShoemakersvillePennsylvaniaMember_17239615-4cde-446a-a5f9-a102be43becf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_4bd58c4e-e362-4141-87d3-eee2e06df8da" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_954316cd-05eb-4b17-b3ee-db88f81359f6" xlink:to="loc_us-gaap_LesseeLeaseDescriptionLineItems_4bd58c4e-e362-4141-87d3-eee2e06df8da" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_LesseeOperatingLeaseRentedArea_b043fb66-87c5-4740-b21f-6a3cbb082fd4" xlink:href="hyfm-20220630.xsd#hyfm_LesseeOperatingLeaseRentedArea"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_4bd58c4e-e362-4141-87d3-eee2e06df8da" xlink:to="loc_hyfm_LesseeOperatingLeaseRentedArea_b043fb66-87c5-4740-b21f-6a3cbb082fd4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_8a0f6467-d78a-4d7f-80d7-807a115359f8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_4bd58c4e-e362-4141-87d3-eee2e06df8da" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_8a0f6467-d78a-4d7f-80d7-807a115359f8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/OPERATINGLEASESBalanceSheetDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#OPERATINGLEASESBalanceSheetDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/OPERATINGLEASESBalanceSheetDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeasesAbstract_55ed8c2e-ec0d-41ce-b7cc-72b2796206b0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeasesAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_0a10021e-aa94-4ffa-8b5e-b556422834d5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_55ed8c2e-ec0d-41ce-b7cc-72b2796206b0" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_0a10021e-aa94-4ffa-8b5e-b556422834d5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_OperatingLeaseAsset_f4666a5e-e2b1-4326-af3f-6b4e829be577" xlink:href="hyfm-20220630.xsd#hyfm_OperatingLeaseAsset"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_55ed8c2e-ec0d-41ce-b7cc-72b2796206b0" xlink:to="loc_hyfm_OperatingLeaseAsset_f4666a5e-e2b1-4326-af3f-6b4e829be577" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_46692cae-4461-4f44-a87b-1ad9cf748c60" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_55ed8c2e-ec0d-41ce-b7cc-72b2796206b0" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_46692cae-4461-4f44-a87b-1ad9cf748c60" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_15a820c0-8500-4fae-ad1e-f3604154307e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_55ed8c2e-ec0d-41ce-b7cc-72b2796206b0" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_15a820c0-8500-4fae-ad1e-f3604154307e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_2ce24c92-2260-4b04-85fe-fc26fa77b510" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiability"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_55ed8c2e-ec0d-41ce-b7cc-72b2796206b0" xlink:to="loc_us-gaap_OperatingLeaseLiability_2ce24c92-2260-4b04-85fe-fc26fa77b510" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/OPERATINGLEASESFutureMinimumLeasePaymentDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#OPERATINGLEASESFutureMinimumLeasePaymentDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/OPERATINGLEASESFutureMinimumLeasePaymentDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeasesAbstract_64f4d22b-8c5c-43f5-9fb2-247761afe122" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeasesAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_f65b83cc-c070-4922-80a1-9d82150c6ad2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64f4d22b-8c5c-43f5-9fb2-247761afe122" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_f65b83cc-c070-4922-80a1-9d82150c6ad2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_17bcaeab-124f-4ec1-b2e6-26ca21fc2fc2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64f4d22b-8c5c-43f5-9fb2-247761afe122" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_17bcaeab-124f-4ec1-b2e6-26ca21fc2fc2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_08820ee7-dd1b-46d5-b1fb-ed315118ecec" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64f4d22b-8c5c-43f5-9fb2-247761afe122" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_08820ee7-dd1b-46d5-b1fb-ed315118ecec" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1ce81f28-7885-454b-9d9b-6d7ec02e5e30" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64f4d22b-8c5c-43f5-9fb2-247761afe122" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1ce81f28-7885-454b-9d9b-6d7ec02e5e30" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_bdb6e371-d63d-4647-ae61-3ac31e88266f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64f4d22b-8c5c-43f5-9fb2-247761afe122" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_bdb6e371-d63d-4647-ae61-3ac31e88266f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_4142df95-41b5-4340-8166-af1678605613" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64f4d22b-8c5c-43f5-9fb2-247761afe122" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_4142df95-41b5-4340-8166-af1678605613" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_6225d471-d6a6-4ef3-bbce-ca70b7ea182b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64f4d22b-8c5c-43f5-9fb2-247761afe122" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_6225d471-d6a6-4ef3-bbce-ca70b7ea182b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_cf844c0c-ffcd-4fb7-89e6-2a4d01cda35f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64f4d22b-8c5c-43f5-9fb2-247761afe122" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_cf844c0c-ffcd-4fb7-89e6-2a4d01cda35f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_136977ab-7b03-4847-a22d-aa9dba3789b0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
<link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64f4d22b-8c5c-43f5-9fb2-247761afe122" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_136977ab-7b03-4847-a22d-aa9dba3789b0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_d1599d5f-7b75-48be-92c4-b22f89ae066f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiability"/>
<link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64f4d22b-8c5c-43f5-9fb2-247761afe122" xlink:to="loc_us-gaap_OperatingLeaseLiability_d1599d5f-7b75-48be-92c4-b22f89ae066f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_14e957d1-e632-426f-a098-0fc0eb51461b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
<link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64f4d22b-8c5c-43f5-9fb2-247761afe122" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_14e957d1-e632-426f-a098-0fc0eb51461b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_782883ab-817b-4879-a709-623e3b3bdeaa" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
<link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_64f4d22b-8c5c-43f5-9fb2-247761afe122" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_782883ab-817b-4879-a709-623e3b3bdeaa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/OPERATINGLEASESFutureMinimumLeasePaymentDetails_1" xlink:type="simple" xlink:href="hyfm-20220630.xsd#OPERATINGLEASESFutureMinimumLeasePaymentDetails_1"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/OPERATINGLEASESFutureMinimumLeasePaymentDetails_1" xlink:type="extended"/>
<link:roleRef roleURI="http://www.hydrofarm.com/role/OPERATINGLEASESLeaseNotyetCommencedMaturityDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#OPERATINGLEASESLeaseNotyetCommencedMaturityDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/OPERATINGLEASESLeaseNotyetCommencedMaturityDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeasesAbstract_eddcb546-b7dc-4f9b-a269-8ec46aea9f29" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeasesAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedRemainderOfFiscalYear_e74fa765-80bb-496c-99b2-d887754c1762" xlink:href="hyfm-20220630.xsd#hyfm_LesseeOperatingLeaseLeaseNotYetCommencedRemainderOfFiscalYear"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_eddcb546-b7dc-4f9b-a269-8ec46aea9f29" xlink:to="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedRemainderOfFiscalYear_e74fa765-80bb-496c-99b2-d887754c1762" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearOne_b1ec1341-c3f0-4b21-87e3-5ca51f4ed36d" xlink:href="hyfm-20220630.xsd#hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearOne"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_eddcb546-b7dc-4f9b-a269-8ec46aea9f29" xlink:to="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearOne_b1ec1341-c3f0-4b21-87e3-5ca51f4ed36d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearTwo_8227eaa4-3ecb-4d6a-afad-701cbc0aa7e7" xlink:href="hyfm-20220630.xsd#hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearTwo"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_eddcb546-b7dc-4f9b-a269-8ec46aea9f29" xlink:to="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearTwo_8227eaa4-3ecb-4d6a-afad-701cbc0aa7e7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearThree_a38ebcaa-510a-4cd4-b494-a380e6605b80" xlink:href="hyfm-20220630.xsd#hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearThree"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_eddcb546-b7dc-4f9b-a269-8ec46aea9f29" xlink:to="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearThree_a38ebcaa-510a-4cd4-b494-a380e6605b80" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearFour_0af65a97-6a67-4045-8e3e-c0f6704641ee" xlink:href="hyfm-20220630.xsd#hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearFour"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_eddcb546-b7dc-4f9b-a269-8ec46aea9f29" xlink:to="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearFour_0af65a97-6a67-4045-8e3e-c0f6704641ee" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearFive_e8fcb782-f6b5-4c03-8dd2-473e85445fd0" xlink:href="hyfm-20220630.xsd#hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearFive"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_eddcb546-b7dc-4f9b-a269-8ec46aea9f29" xlink:to="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedYearFive_e8fcb782-f6b5-4c03-8dd2-473e85445fd0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedAfterFiveYears_7e02f663-bf28-41c9-8e80-939585511524" xlink:href="hyfm-20220630.xsd#hyfm_LesseeOperatingLeaseLeaseNotYetCommencedAfterFiveYears"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_eddcb546-b7dc-4f9b-a269-8ec46aea9f29" xlink:to="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedAfterFiveYears_7e02f663-bf28-41c9-8e80-939585511524" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedLiability_6bd88e62-b20a-40e4-91c4-f41bfb8f0a3c" xlink:href="hyfm-20220630.xsd#hyfm_LesseeOperatingLeaseLeaseNotYetCommencedLiability"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LeasesAbstract_eddcb546-b7dc-4f9b-a269-8ec46aea9f29" xlink:to="loc_hyfm_LesseeOperatingLeaseLeaseNotYetCommencedLiability_6bd88e62-b20a-40e4-91c4-f41bfb8f0a3c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/PROPERTYPLANTANDEQUIPMENTNET" xlink:type="simple" xlink:href="hyfm-20220630.xsd#PROPERTYPLANTANDEQUIPMENTNET"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/PROPERTYPLANTANDEQUIPMENTNET" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAbstract_f5e937b7-f4fe-43c8-b935-5f2c87a883b4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_f22eb71b-cb06-49d9-9cd2-f78ddf4d312f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAbstract_f5e937b7-f4fe-43c8-b935-5f2c87a883b4" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_f22eb71b-cb06-49d9-9cd2-f78ddf4d312f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/PROPERTYPLANTANDEQUIPMENTNETTables" xlink:type="simple" xlink:href="hyfm-20220630.xsd#PROPERTYPLANTANDEQUIPMENTNETTables"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/PROPERTYPLANTANDEQUIPMENTNETTables" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAbstract_4f4389b4-6e9a-4a4c-b063-fa270d2c2c80" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_f9f6091e-c656-4830-b6eb-e77a26d1ac7d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAbstract_4f4389b4-6e9a-4a4c-b063-fa270d2c2c80" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_f9f6091e-c656-4830-b6eb-e77a26d1ac7d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/PROPERTYPLANTANDEQUIPMENTNETDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#PROPERTYPLANTANDEQUIPMENTNETDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/PROPERTYPLANTANDEQUIPMENTNETDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAbstract_85fd19d6-c444-4fb0-a585-b086a734f89d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_c0499f16-7582-4b4b-a444-6d663bcc145c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAbstract_85fd19d6-c444-4fb0-a585-b086a734f89d" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_c0499f16-7582-4b4b-a444-6d663bcc145c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_0a54bb2b-da11-472f-ac84-64d539a4bc2a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_c0499f16-7582-4b4b-a444-6d663bcc145c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_0a54bb2b-da11-472f-ac84-64d539a4bc2a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4b1495cf-237d-45f5-a7c9-42aedce17bbd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_0a54bb2b-da11-472f-ac84-64d539a4bc2a" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4b1495cf-237d-45f5-a7c9-42aedce17bbd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MachineryAndEquipmentMember_26e20189-2d60-4c08-a9c7-0533bf0c7f14" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MachineryAndEquipmentMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4b1495cf-237d-45f5-a7c9-42aedce17bbd" xlink:to="loc_us-gaap_MachineryAndEquipmentMember_26e20189-2d60-4c08-a9c7-0533bf0c7f14" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_PeatBogsAndRelatedDevelopmentMember_247b51f9-2170-4329-92fa-0d5617b3521e" xlink:href="hyfm-20220630.xsd#hyfm_PeatBogsAndRelatedDevelopmentMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4b1495cf-237d-45f5-a7c9-42aedce17bbd" xlink:to="loc_hyfm_PeatBogsAndRelatedDevelopmentMember_247b51f9-2170-4329-92fa-0d5617b3521e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_6faba918-3567-40d8-b5ba-3110dd4afe70" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BuildingAndBuildingImprovementsMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4b1495cf-237d-45f5-a7c9-42aedce17bbd" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_6faba918-3567-40d8-b5ba-3110dd4afe70" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandMember_576e7ff9-46bd-4036-9f5d-44801225f840" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LandMember"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4b1495cf-237d-45f5-a7c9-42aedce17bbd" xlink:to="loc_us-gaap_LandMember_576e7ff9-46bd-4036-9f5d-44801225f840" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_6b343e55-dd5d-421b-8afd-6659d72a0840" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeaseholdImprovementsMember"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4b1495cf-237d-45f5-a7c9-42aedce17bbd" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_6b343e55-dd5d-421b-8afd-6659d72a0840" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerEquipmentMember_a671542d-da24-469c-9cc8-fe8f06a456c1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ComputerEquipmentMember"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4b1495cf-237d-45f5-a7c9-42aedce17bbd" xlink:to="loc_us-gaap_ComputerEquipmentMember_a671542d-da24-469c-9cc8-fe8f06a456c1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FurnitureAndFixturesMember_8dc75472-e2d3-4a70-8dad-1d53643245db" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FurnitureAndFixturesMember"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_4b1495cf-237d-45f5-a7c9-42aedce17bbd" xlink:to="loc_us-gaap_FurnitureAndFixturesMember_8dc75472-e2d3-4a70-8dad-1d53643245db" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_55bd72c1-df6a-48f6-bb87-fffa84412726" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_c0499f16-7582-4b4b-a444-6d663bcc145c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentLineItems_55bd72c1-df6a-48f6-bb87-fffa84412726" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_f793db9b-63af-46e3-97d8-c88529ec5353" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_55bd72c1-df6a-48f6-bb87-fffa84412726" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_f793db9b-63af-46e3-97d8-c88529ec5353" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_08abfaf1-136d-4c18-954f-507ad4ff68da" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_55bd72c1-df6a-48f6-bb87-fffa84412726" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_08abfaf1-136d-4c18-954f-507ad4ff68da" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_7cad0289-c590-45fc-8aa2-372d9041f2c6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_55bd72c1-df6a-48f6-bb87-fffa84412726" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_7cad0289-c590-45fc-8aa2-372d9041f2c6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_1fb25097-7d92-4137-8ef8-419920a8d0c0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Depreciation"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_55bd72c1-df6a-48f6-bb87-fffa84412726" xlink:to="loc_us-gaap_Depreciation_1fb25097-7d92-4137-8ef8-419920a8d0c0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/ACCRUEDEXPENSESANDOTHERCURRENTLIABILITIES" xlink:type="simple" xlink:href="hyfm-20220630.xsd#ACCRUEDEXPENSESANDOTHERCURRENTLIABILITIES"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/ACCRUEDEXPENSESANDOTHERCURRENTLIABILITIES" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PayablesAndAccrualsAbstract_f4c03a40-ea4e-4775-a608-45910de87177" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PayablesAndAccrualsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock_e290ddcc-c5ce-4f56-b501-adcd271803e0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PayablesAndAccrualsAbstract_f4c03a40-ea4e-4775-a608-45910de87177" xlink:to="loc_us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock_e290ddcc-c5ce-4f56-b501-adcd271803e0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/ACCRUEDEXPENSESANDOTHERCURRENTLIABILITIESTables" xlink:type="simple" xlink:href="hyfm-20220630.xsd#ACCRUEDEXPENSESANDOTHERCURRENTLIABILITIESTables"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/ACCRUEDEXPENSESANDOTHERCURRENTLIABILITIESTables" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PayablesAndAccrualsAbstract_3538fe7a-9f3b-4fc8-81ad-e6d2b854a866" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PayablesAndAccrualsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_ScheduleOfAccruedLiabilitiesAndOtherCurrentLiabilitiesTableTextBlock_e155ca20-7d69-4cc4-a74b-55e210329d83" xlink:href="hyfm-20220630.xsd#hyfm_ScheduleOfAccruedLiabilitiesAndOtherCurrentLiabilitiesTableTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PayablesAndAccrualsAbstract_3538fe7a-9f3b-4fc8-81ad-e6d2b854a866" xlink:to="loc_hyfm_ScheduleOfAccruedLiabilitiesAndOtherCurrentLiabilitiesTableTextBlock_e155ca20-7d69-4cc4-a74b-55e210329d83" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/ACCRUEDEXPENSESANDOTHERCURRENTLIABILITIESDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#ACCRUEDEXPENSESANDOTHERCURRENTLIABILITIESDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/ACCRUEDEXPENSESANDOTHERCURRENTLIABILITIESDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PayablesAndAccrualsAbstract_d4d2ac3c-e204-48fa-9783-c2ebaea3ae9e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PayablesAndAccrualsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedEmployeeBenefitsCurrent_b417ae92-2a35-46fb-8ced-26a94cc846a8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccruedEmployeeBenefitsCurrent"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PayablesAndAccrualsAbstract_d4d2ac3c-e204-48fa-9783-c2ebaea3ae9e" xlink:to="loc_us-gaap_AccruedEmployeeBenefitsCurrent_b417ae92-2a35-46fb-8ced-26a94cc846a8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_AccruedFreightCustomAndDutyCurrent_2c5397f2-43c1-40f9-b700-f48fd67e3444" xlink:href="hyfm-20220630.xsd#hyfm_AccruedFreightCustomAndDutyCurrent"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PayablesAndAccrualsAbstract_d4d2ac3c-e204-48fa-9783-c2ebaea3ae9e" xlink:to="loc_hyfm_AccruedFreightCustomAndDutyCurrent_2c5397f2-43c1-40f9-b700-f48fd67e3444" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_AccruedGoodsInTransitCurrent_159aa5ab-2e87-445d-9770-abd51d6a3ffe" xlink:href="hyfm-20220630.xsd#hyfm_AccruedGoodsInTransitCurrent"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PayablesAndAccrualsAbstract_d4d2ac3c-e204-48fa-9783-c2ebaea3ae9e" xlink:to="loc_hyfm_AccruedGoodsInTransitCurrent_159aa5ab-2e87-445d-9770-abd51d6a3ffe" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_d9a54476-73f7-4164-a097-9c0432453d23" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccruedIncomeTaxesCurrent"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PayablesAndAccrualsAbstract_d4d2ac3c-e204-48fa-9783-c2ebaea3ae9e" xlink:to="loc_us-gaap_AccruedIncomeTaxesCurrent_d9a54476-73f7-4164-a097-9c0432453d23" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent_1919a344-b865-4b3f-a6f3-5da5741f7d5f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PayablesAndAccrualsAbstract_d4d2ac3c-e204-48fa-9783-c2ebaea3ae9e" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent_1919a344-b865-4b3f-a6f3-5da5741f7d5f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_0fe3aae1-3dfb-4809-915d-8abbb081cb85" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PayablesAndAccrualsAbstract_d4d2ac3c-e204-48fa-9783-c2ebaea3ae9e" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_0fe3aae1-3dfb-4809-915d-8abbb081cb85" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_AccruedLiabilitiesAndOtherLiabilitiesCurrent_790104f2-a35c-48f7-85c8-a0e04a7c952b" xlink:href="hyfm-20220630.xsd#hyfm_AccruedLiabilitiesAndOtherLiabilitiesCurrent"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PayablesAndAccrualsAbstract_d4d2ac3c-e204-48fa-9783-c2ebaea3ae9e" xlink:to="loc_hyfm_AccruedLiabilitiesAndOtherLiabilitiesCurrent_790104f2-a35c-48f7-85c8-a0e04a7c952b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/DEBT" xlink:type="simple" xlink:href="hyfm-20220630.xsd#DEBT"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/DEBT" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureAbstract_f7fd5984-6d35-4283-ab4d-eb88c11a0219" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtDisclosureAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureTextBlock_aa95e766-2456-4ffb-ab0a-63a87c9f54c8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtDisclosureTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_f7fd5984-6d35-4283-ab4d-eb88c11a0219" xlink:to="loc_us-gaap_DebtDisclosureTextBlock_aa95e766-2456-4ffb-ab0a-63a87c9f54c8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/DEBTTables" xlink:type="simple" xlink:href="hyfm-20220630.xsd#DEBTTables"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/DEBTTables" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureAbstract_eea91c64-3e0f-411c-bf33-7efbbe6a4221" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtDisclosureAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDebtTableTextBlock_a98f4981-5d62-4192-a9d9-7bfd05c2ecc0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDebtTableTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_eea91c64-3e0f-411c-bf33-7efbbe6a4221" xlink:to="loc_us-gaap_ScheduleOfDebtTableTextBlock_a98f4981-5d62-4192-a9d9-7bfd05c2ecc0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/DEBTComponentsDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#DEBTComponentsDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/DEBTComponentsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureAbstract_0b25d5d6-8ed7-4c2b-b56f-7bad742603e0" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtDisclosureAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_41615f5e-2df8-45e4-8652-187fdeaebaa4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_0b25d5d6-8ed7-4c2b-b56f-7bad742603e0" xlink:to="loc_us-gaap_DebtInstrumentTable_41615f5e-2df8-45e4-8652-187fdeaebaa4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_05e4e312-2b1c-4687-98b5-bb80db041d58" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_41615f5e-2df8-45e4-8652-187fdeaebaa4" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_05e4e312-2b1c-4687-98b5-bb80db041d58" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_d52b2c74-1e0a-4df0-9255-890504395953" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_05e4e312-2b1c-4687-98b5-bb80db041d58" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_d52b2c74-1e0a-4df0-9255-890504395953" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_TermLoanMember_73cf0319-e4f0-4944-9e58-f90063dea145" xlink:href="hyfm-20220630.xsd#hyfm_TermLoanMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_d52b2c74-1e0a-4df0-9255-890504395953" xlink:to="loc_hyfm_TermLoanMember_73cf0319-e4f0-4944-9e58-f90063dea145" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_OtherDebtMember_534d9e23-7c3e-4ea2-ae56-a9969069de96" xlink:href="hyfm-20220630.xsd#hyfm_OtherDebtMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_d52b2c74-1e0a-4df0-9255-890504395953" xlink:to="loc_hyfm_OtherDebtMember_534d9e23-7c3e-4ea2-ae56-a9969069de96" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_63a277a7-aa2b-472c-8d68-0fbe8657eae8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_41615f5e-2df8-45e4-8652-187fdeaebaa4" xlink:to="loc_us-gaap_DebtInstrumentLineItems_63a277a7-aa2b-472c-8d68-0fbe8657eae8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_7a0892e3-e043-44d8-a9dd-31da4996f72c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebt"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_63a277a7-aa2b-472c-8d68-0fbe8657eae8" xlink:to="loc_us-gaap_LongTermDebt_7a0892e3-e043-44d8-a9dd-31da4996f72c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_7874e7ff-3b2f-4650-bd1f-22a830f6b25d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_63a277a7-aa2b-472c-8d68-0fbe8657eae8" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_7874e7ff-3b2f-4650-bd1f-22a830f6b25d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_64da34d7-c996-433d-aeb6-fef2a97d4172" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_63a277a7-aa2b-472c-8d68-0fbe8657eae8" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_64da34d7-c996-433d-aeb6-fef2a97d4172" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_69092dcb-1524-43be-9a7a-59e35a9a5517" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_63a277a7-aa2b-472c-8d68-0fbe8657eae8" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_69092dcb-1524-43be-9a7a-59e35a9a5517" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_26879186-6b32-49ba-b5c3-a8a13e60df8a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_63a277a7-aa2b-472c-8d68-0fbe8657eae8" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_26879186-6b32-49ba-b5c3-a8a13e60df8a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/DEBTTermLoansDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#DEBTTermLoansDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/DEBTTermLoansDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureAbstract_08d97fb3-5cd2-4ea3-8109-341f833d5d23" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtDisclosureAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_05488595-fe7e-4151-ac2d-f7d41b0013f2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_08d97fb3-5cd2-4ea3-8109-341f833d5d23" xlink:to="loc_us-gaap_DebtInstrumentTable_05488595-fe7e-4151-ac2d-f7d41b0013f2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_8625d2f0-51ab-4854-899b-81555b67991c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_05488595-fe7e-4151-ac2d-f7d41b0013f2" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_8625d2f0-51ab-4854-899b-81555b67991c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_056fc562-ba02-4b3c-a9ad-45e567723ce2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_8625d2f0-51ab-4854-899b-81555b67991c" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_056fc562-ba02-4b3c-a9ad-45e567723ce2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_TermLoanMember_e92221fc-8daa-4e9b-8a2d-a1e3676c48fe" xlink:href="hyfm-20220630.xsd#hyfm_TermLoanMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_056fc562-ba02-4b3c-a9ad-45e567723ce2" xlink:to="loc_hyfm_TermLoanMember_e92221fc-8daa-4e9b-8a2d-a1e3676c48fe" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/netLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_7d81bde8-5067-4495-8493-a42dadfbd8e8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableRateAxis"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_05488595-fe7e-4151-ac2d-f7d41b0013f2" xlink:to="loc_us-gaap_VariableRateAxis_7d81bde8-5067-4495-8493-a42dadfbd8e8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_e14425be-349a-416f-b528-bc21d6df90e4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableRateDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_VariableRateAxis_7d81bde8-5067-4495-8493-a42dadfbd8e8" xlink:to="loc_us-gaap_VariableRateDomain_e14425be-349a-416f-b528-bc21d6df90e4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_fba860e1-83a2-477e-b272-99f955dea771" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_VariableRateDomain_e14425be-349a-416f-b528-bc21d6df90e4" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_fba860e1-83a2-477e-b272-99f955dea771" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_56ffb319-0325-401f-a852-17d549a357a2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BaseRateMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_VariableRateDomain_e14425be-349a-416f-b528-bc21d6df90e4" xlink:to="loc_us-gaap_BaseRateMember_56ffb319-0325-401f-a852-17d549a357a2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_05488595-fe7e-4151-ac2d-f7d41b0013f2" xlink:to="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_b6013aa6-4119-4dcf-b91f-892f54fa93ed" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_b6013aa6-4119-4dcf-b91f-892f54fa93ed" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_DebtInstrumentFloorOnVariableRate_193b7cca-6305-4f95-aa4e-e14de6ad694b" xlink:href="hyfm-20220630.xsd#hyfm_DebtInstrumentFloorOnVariableRate"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:to="loc_hyfm_DebtInstrumentFloorOnVariableRate_193b7cca-6305-4f95-aa4e-e14de6ad694b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_b920fd79-6997-4536-998c-ad574141ce8c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_b920fd79-6997-4536-998c-ad574141ce8c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_DebtInstrumentCallPremiumRateYearOne_348f81f3-3a6d-4199-a820-6fc782be2932" xlink:href="hyfm-20220630.xsd#hyfm_DebtInstrumentCallPremiumRateYearOne"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:to="loc_hyfm_DebtInstrumentCallPremiumRateYearOne_348f81f3-3a6d-4199-a820-6fc782be2932" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_DebtInstrumentCallPremiumRateYearTwo_e0ef38ef-7e8b-424c-8e68-dd3084094e20" xlink:href="hyfm-20220630.xsd#hyfm_DebtInstrumentCallPremiumRateYearTwo"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:to="loc_hyfm_DebtInstrumentCallPremiumRateYearTwo_e0ef38ef-7e8b-424c-8e68-dd3084094e20" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_DebtInstrumentCallPremiumRateAfterYearTwo_c1a3b4e3-e154-4a63-8ce0-df224b331714" xlink:href="hyfm-20220630.xsd#hyfm_DebtInstrumentCallPremiumRateAfterYearTwo"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:to="loc_hyfm_DebtInstrumentCallPremiumRateAfterYearTwo_c1a3b4e3-e154-4a63-8ce0-df224b331714" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_DebtInstrumentInterestRateLocked_861c4210-0530-4a47-b25d-f0e7812f5154" xlink:href="hyfm-20220630.xsd#hyfm_DebtInstrumentInterestRateLocked"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:to="loc_hyfm_DebtInstrumentInterestRateLocked_861c4210-0530-4a47-b25d-f0e7812f5154" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateDuringPeriod_94666d85-d4d9-415e-94c7-25d7a729217b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentInterestRateDuringPeriod"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:to="loc_us-gaap_DebtInstrumentInterestRateDuringPeriod_94666d85-d4d9-415e-94c7-25d7a729217b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_101605a8-9cc9-41b5-b028-14f18821f5b5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
<link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_101605a8-9cc9-41b5-b028-14f18821f5b5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_fce347ea-122c-4264-9c46-f307b40015ff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestExpenseDebt"/>
<link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:to="loc_us-gaap_InterestExpenseDebt_fce347ea-122c-4264-9c46-f307b40015ff" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_365a73ae-fe98-43cd-8dc1-aa6cb107f0f6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AmortizationOfFinancingCosts"/>
<link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_365a73ae-fe98-43cd-8dc1-aa6cb107f0f6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_DebtInstrumentQuarterlyPaymentPrincipalOutstandingPercentage_f521d2df-0bd5-4200-9a5c-c41831174d73" xlink:href="hyfm-20220630.xsd#hyfm_DebtInstrumentQuarterlyPaymentPrincipalOutstandingPercentage"/>
<link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:to="loc_hyfm_DebtInstrumentQuarterlyPaymentPrincipalOutstandingPercentage_f521d2df-0bd5-4200-9a5c-c41831174d73" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_d33dc78d-d968-43f4-93d4-408e80e87236" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinanceLeaseLiability"/>
<link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:to="loc_us-gaap_FinanceLeaseLiability_d33dc78d-d968-43f4-93d4-408e80e87236" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLongTermDebt_6da87a5a-a8cf-4eb8-9138-354fdec23595" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherLongTermDebt"/>
<link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_613d6dc7-56e3-4d4d-b1e2-05646f8e8226" xlink:to="loc_us-gaap_OtherLongTermDebt_6da87a5a-a8cf-4eb8-9138-354fdec23595" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/DEBTRevolvingAssetbackedCreditFacilitiesDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#DEBTRevolvingAssetbackedCreditFacilitiesDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/DEBTRevolvingAssetbackedCreditFacilitiesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureAbstract_32d77342-54c8-4a3f-952f-1d38dbd99b26" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtDisclosureAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_5f135c10-132e-44d5-9074-96ea7d0e5647" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtDisclosureAbstract_32d77342-54c8-4a3f-952f-1d38dbd99b26" xlink:to="loc_us-gaap_DebtInstrumentTable_5f135c10-132e-44d5-9074-96ea7d0e5647" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_2fe40bfb-20c5-47d8-ad3f-e4c540f31a94" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_5f135c10-132e-44d5-9074-96ea7d0e5647" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_2fe40bfb-20c5-47d8-ad3f-e4c540f31a94" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_2765813f-5d50-4fcf-adbe-3d4df3f8786c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_2fe40bfb-20c5-47d8-ad3f-e4c540f31a94" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_2765813f-5d50-4fcf-adbe-3d4df3f8786c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_RevolvingAssetBakedCreditFacilityMember_656ddf44-4842-4d8d-ab84-1b9c583d242a" xlink:href="hyfm-20220630.xsd#hyfm_RevolvingAssetBakedCreditFacilityMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_2765813f-5d50-4fcf-adbe-3d4df3f8786c" xlink:to="loc_hyfm_RevolvingAssetBakedCreditFacilityMember_656ddf44-4842-4d8d-ab84-1b9c583d242a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BridgeLoanMember_424fbb84-173e-40fe-9ee5-c203d285eb7e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BridgeLoanMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_2765813f-5d50-4fcf-adbe-3d4df3f8786c" xlink:to="loc_us-gaap_BridgeLoanMember_424fbb84-173e-40fe-9ee5-c203d285eb7e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_5bd01a39-a12e-4798-a5d9-9dcfafe7ef35" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_CounterpartyNameAxis"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_5f135c10-132e-44d5-9074-96ea7d0e5647" xlink:to="loc_srt_CounterpartyNameAxis_5bd01a39-a12e-4798-a5d9-9dcfafe7ef35" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9ce300cb-4481-45bb-83fb-2183b348a9d6" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_CounterpartyNameAxis_5bd01a39-a12e-4798-a5d9-9dcfafe7ef35" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9ce300cb-4481-45bb-83fb-2183b348a9d6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_EncinaObligorsMember_26ae83f4-0ab1-4292-8c2e-d445428c1744" xlink:href="hyfm-20220630.xsd#hyfm_EncinaObligorsMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9ce300cb-4481-45bb-83fb-2183b348a9d6" xlink:to="loc_hyfm_EncinaObligorsMember_26ae83f4-0ab1-4292-8c2e-d445428c1744" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_6f9c421e-b223-4780-8c8e-8698810e437a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentAxis"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_5f135c10-132e-44d5-9074-96ea7d0e5647" xlink:to="loc_us-gaap_DebtInstrumentAxis_6f9c421e-b223-4780-8c8e-8698810e437a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_a67f534c-8e29-4cee-841e-d01be1a11c23" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentAxis_6f9c421e-b223-4780-8c8e-8698810e437a" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_a67f534c-8e29-4cee-841e-d01be1a11c23" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_JPMorganCreditFacilityMember_48c43594-5c90-4056-b116-867cd4e06871" xlink:href="hyfm-20220630.xsd#hyfm_JPMorganCreditFacilityMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_a67f534c-8e29-4cee-841e-d01be1a11c23" xlink:to="loc_hyfm_JPMorganCreditFacilityMember_48c43594-5c90-4056-b116-867cd4e06871" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_4147ec9d-46fe-49b9-94cd-6e1cc23a168a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityAxis"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_5f135c10-132e-44d5-9074-96ea7d0e5647" xlink:to="loc_us-gaap_CreditFacilityAxis_4147ec9d-46fe-49b9-94cd-6e1cc23a168a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_870053ab-f558-4792-b87b-fbd30898af18" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityAxis_4147ec9d-46fe-49b9-94cd-6e1cc23a168a" xlink:to="loc_us-gaap_CreditFacilityDomain_870053ab-f558-4792-b87b-fbd30898af18" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_ff20960b-a8da-46fe-9d6a-d3f76aab7d84" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevolvingCreditFacilityMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityDomain_870053ab-f558-4792-b87b-fbd30898af18" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_ff20960b-a8da-46fe-9d6a-d3f76aab7d84" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_90630494-ff09-4a68-9ce2-e8d78c6940f7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableRateAxis"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_5f135c10-132e-44d5-9074-96ea7d0e5647" xlink:to="loc_us-gaap_VariableRateAxis_90630494-ff09-4a68-9ce2-e8d78c6940f7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_3e5efa55-0461-4627-bbe8-7e6923c7e19f" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VariableRateDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_VariableRateAxis_90630494-ff09-4a68-9ce2-e8d78c6940f7" xlink:to="loc_us-gaap_VariableRateDomain_3e5efa55-0461-4627-bbe8-7e6923c7e19f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_0992edea-1a7f-4359-b5ad-be14693a0499" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_VariableRateDomain_3e5efa55-0461-4627-bbe8-7e6923c7e19f" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_0992edea-1a7f-4359-b5ad-be14693a0499" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_03d4c92e-ed26-4a98-86a9-fec922554c4e" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementGeographicalAxis"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_5f135c10-132e-44d5-9074-96ea7d0e5647" xlink:to="loc_srt_StatementGeographicalAxis_03d4c92e-ed26-4a98-86a9-fec922554c4e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_290a84e2-ca4a-467e-8794-f6fa49213b78" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_StatementGeographicalAxis_03d4c92e-ed26-4a98-86a9-fec922554c4e" xlink:to="loc_srt_SegmentGeographicalDomain_290a84e2-ca4a-467e-8794-f6fa49213b78" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_country_CA_0b4365d6-eb84-499c-95de-c998b7266f86" xlink:href="https://xbrl.sec.gov/country/2022/country-2022.xsd#country_CA"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_SegmentGeographicalDomain_290a84e2-ca4a-467e-8794-f6fa49213b78" xlink:to="loc_country_CA_0b4365d6-eb84-499c-95de-c998b7266f86" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentTable_5f135c10-132e-44d5-9074-96ea7d0e5647" xlink:to="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_b9bd58eb-2377-49c3-8c6c-165d3ce1bb0b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentTerm"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_us-gaap_DebtInstrumentTerm_b9bd58eb-2377-49c3-8c6c-165d3ce1bb0b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_0b06bac4-b213-48dc-afa5-fed5008b409a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_0b06bac4-b213-48dc-afa5-fed5008b409a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_LineOfCreditFacilityAccordionFeatureIncreaseLimit_1cce82d0-4ec9-46a3-ae17-d0f61350c3d4" xlink:href="hyfm-20220630.xsd#hyfm_LineOfCreditFacilityAccordionFeatureIncreaseLimit"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_hyfm_LineOfCreditFacilityAccordionFeatureIncreaseLimit_1cce82d0-4ec9-46a3-ae17-d0f61350c3d4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_LineOfCreditFacilityAccordionFeatureWithdrawalLimitIncrement_69313868-07f6-4dd5-ae48-44c4378e2eb6" xlink:href="hyfm-20220630.xsd#hyfm_LineOfCreditFacilityAccordionFeatureWithdrawalLimitIncrement"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_hyfm_LineOfCreditFacilityAccordionFeatureWithdrawalLimitIncrement_69313868-07f6-4dd5-ae48-44c4378e2eb6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_9bcf1f04-427e-41ba-bf52-201b3f9c9583" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_9bcf1f04-427e-41ba-bf52-201b3f9c9583" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_DebtInstrumentFloorOnVariableRate_45564a09-ba25-4f0e-99c8-fd351e8f5299" xlink:href="hyfm-20220630.xsd#hyfm_DebtInstrumentFloorOnVariableRate"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_hyfm_DebtInstrumentFloorOnVariableRate_45564a09-ba25-4f0e-99c8-fd351e8f5299" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_174983fe-6046-4cd9-ba91-9b1bc67b7ca3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_174983fe-6046-4cd9-ba91-9b1bc67b7ca3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnamortizedDebtIssuanceExpense_b666f18e-9434-4b69-b614-c88eb8221d7a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnamortizedDebtIssuanceExpense"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_us-gaap_UnamortizedDebtIssuanceExpense_b666f18e-9434-4b69-b614-c88eb8221d7a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_69a2ce49-6b34-47a7-81b1-d5aedd8c3333" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
<link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_69a2ce49-6b34-47a7-81b1-d5aedd8c3333" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_DebtInstrumentCovenantMinimumFixedChargeCoverageRatioMultiplier_ac2bc04b-c566-482e-b472-f428d45677c0" xlink:href="hyfm-20220630.xsd#hyfm_DebtInstrumentCovenantMinimumFixedChargeCoverageRatioMultiplier"/>
<link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_hyfm_DebtInstrumentCovenantMinimumFixedChargeCoverageRatioMultiplier_ac2bc04b-c566-482e-b472-f428d45677c0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_DebtInstrumentExcessAvailability_2fe56ce3-358f-4cbe-b6b6-f34de789c61c" xlink:href="hyfm-20220630.xsd#hyfm_DebtInstrumentExcessAvailability"/>
<link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_hyfm_DebtInstrumentExcessAvailability_2fe56ce3-358f-4cbe-b6b6-f34de789c61c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_DebtInstrumentCovenantMinimumFixedChargeCoverageRatioTerm_b74a0200-bad6-4f8f-8850-f8e2b3467432" xlink:href="hyfm-20220630.xsd#hyfm_DebtInstrumentCovenantMinimumFixedChargeCoverageRatioTerm"/>
<link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_hyfm_DebtInstrumentCovenantMinimumFixedChargeCoverageRatioTerm_b74a0200-bad6-4f8f-8850-f8e2b3467432" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_DebtInstrumentCovenantMinimumFixedChargeCoverageRatioExcessAvailabilityTerm_aa2c5077-7cf2-4e64-80aa-ad6d552991c2" xlink:href="hyfm-20220630.xsd#hyfm_DebtInstrumentCovenantMinimumFixedChargeCoverageRatioExcessAvailabilityTerm"/>
<link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_hyfm_DebtInstrumentCovenantMinimumFixedChargeCoverageRatioExcessAvailabilityTerm_aa2c5077-7cf2-4e64-80aa-ad6d552991c2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_DebtInstrumentCovenantFixedChargeCoverageRatioRestrictedPayments_d440180c-a496-4f15-aa1e-e1e7da5e9d90" xlink:href="hyfm-20220630.xsd#hyfm_DebtInstrumentCovenantFixedChargeCoverageRatioRestrictedPayments"/>
<link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_hyfm_DebtInstrumentCovenantFixedChargeCoverageRatioRestrictedPayments_d440180c-a496-4f15-aa1e-e1e7da5e9d90" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityFairValueOfAmountOutstanding_90610510-aa40-4c95-a899-decf567e7704" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LineOfCreditFacilityFairValueOfAmountOutstanding"/>
<link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_us-gaap_LineOfCreditFacilityFairValueOfAmountOutstanding_90610510-aa40-4c95-a899-decf567e7704" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_DebtInstrumentPaymentDuePeriodBeforeScheduledMaturityDate_e4ab858d-49d0-4420-8ac6-a901b4c760a3" xlink:href="hyfm-20220630.xsd#hyfm_DebtInstrumentPaymentDuePeriodBeforeScheduledMaturityDate"/>
<link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_hyfm_DebtInstrumentPaymentDuePeriodBeforeScheduledMaturityDate_e4ab858d-49d0-4420-8ac6-a901b4c760a3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_d8247ce6-0bb3-41dd-83e4-f9e936b8e004" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
<link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DebtInstrumentLineItems_cf3eb8ce-7efc-43fe-805d-d90661d2a4ba" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_d8247ce6-0bb3-41dd-83e4-f9e936b8e004" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/STOCKHOLDERSEQUITY" xlink:type="simple" xlink:href="hyfm-20220630.xsd#STOCKHOLDERSEQUITY"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/STOCKHOLDERSEQUITY" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityAbstract_2f6a8383-7826-4f56-8dc7-0dc06b770b9a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_66d73170-777c-4ac8-8551-fd4d6e9b9bc2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityAbstract_2f6a8383-7826-4f56-8dc7-0dc06b770b9a" xlink:to="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_66d73170-777c-4ac8-8551-fd4d6e9b9bc2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/STOCKHOLDERSEQUITYTables" xlink:type="simple" xlink:href="hyfm-20220630.xsd#STOCKHOLDERSEQUITYTables"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/STOCKHOLDERSEQUITYTables" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityAbstract_0f32e4ab-a070-4944-b27b-b9d02c08de02" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock_7548ff71-c1d7-4c08-9c69-16b4fd4fc05d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityAbstract_0f32e4ab-a070-4944-b27b-b9d02c08de02" xlink:to="loc_us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock_7548ff71-c1d7-4c08-9c69-16b4fd4fc05d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/STOCKHOLDERSEQUITYWarrantNarrativeDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#STOCKHOLDERSEQUITYWarrantNarrativeDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/STOCKHOLDERSEQUITYWarrantNarrativeDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityAbstract_b32a02a8-e0a4-4dab-818b-8d2a47e36c6b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightTable_3cb5cbe7-e9bd-4d20-95ed-b5a3e4de03ac" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityAbstract_b32a02a8-e0a4-4dab-818b-8d2a47e36c6b" xlink:to="loc_us-gaap_ClassOfWarrantOrRightTable_3cb5cbe7-e9bd-4d20-95ed-b5a3e4de03ac" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightAxis_41af99a4-bf92-41cc-9ee9-fca3ad3ed363" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightTable_3cb5cbe7-e9bd-4d20-95ed-b5a3e4de03ac" xlink:to="loc_us-gaap_ClassOfWarrantOrRightAxis_41af99a4-bf92-41cc-9ee9-fca3ad3ed363" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_db1caf8c-7e27-46e8-8202-03057ef6bd7b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_41af99a4-bf92-41cc-9ee9-fca3ad3ed363" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_db1caf8c-7e27-46e8-8202-03057ef6bd7b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_InvestorWarrantsMember_0497ea8f-1dcf-44c3-ab10-5fdf9f14847d" xlink:href="hyfm-20220630.xsd#hyfm_InvestorWarrantsMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_db1caf8c-7e27-46e8-8202-03057ef6bd7b" xlink:to="loc_hyfm_InvestorWarrantsMember_0497ea8f-1dcf-44c3-ab10-5fdf9f14847d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_8bbd1602-0572-41f6-b36e-e70aa3082482" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementClassOfStockAxis"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightTable_3cb5cbe7-e9bd-4d20-95ed-b5a3e4de03ac" xlink:to="loc_us-gaap_StatementClassOfStockAxis_8bbd1602-0572-41f6-b36e-e70aa3082482" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_4924b2dd-2d72-4072-abe9-449d2174c974" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_8bbd1602-0572-41f6-b36e-e70aa3082482" xlink:to="loc_us-gaap_ClassOfStockDomain_4924b2dd-2d72-4072-abe9-449d2174c974" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_e5ebb8d4-bd4c-4a08-92c0-114553669d43" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_4924b2dd-2d72-4072-abe9-449d2174c974" xlink:to="loc_us-gaap_CommonStockMember_e5ebb8d4-bd4c-4a08-92c0-114553669d43" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_c39ef5ac-d93d-451d-b248-1f08b9a6f35a" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightTable_3cb5cbe7-e9bd-4d20-95ed-b5a3e4de03ac" xlink:to="loc_srt_RangeAxis_c39ef5ac-d93d-451d-b248-1f08b9a6f35a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_cdfad2dd-3148-4878-8453-661f9adca5a1" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_c39ef5ac-d93d-451d-b248-1f08b9a6f35a" xlink:to="loc_srt_RangeMember_cdfad2dd-3148-4878-8453-661f9adca5a1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_b699932d-df9b-495e-a953-749833265bf5" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_cdfad2dd-3148-4878-8453-661f9adca5a1" xlink:to="loc_srt_MinimumMember_b699932d-df9b-495e-a953-749833265bf5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightLineItems_561c9ef5-fa4d-4ba3-b7b4-e06a5d677258" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightLineItems"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightTable_3cb5cbe7-e9bd-4d20-95ed-b5a3e4de03ac" xlink:to="loc_us-gaap_ClassOfWarrantOrRightLineItems_561c9ef5-fa4d-4ba3-b7b4-e06a5d677258" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_da33580c-c9ac-4cd4-b527-450b033ec689" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_561c9ef5-fa4d-4ba3-b7b4-e06a5d677258" xlink:to="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_da33580c-c9ac-4cd4-b527-450b033ec689" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_ClassOfWarrantOrRightRedemptionPrice_7d5f09a0-5598-4823-bcfa-b92ebf561187" xlink:href="hyfm-20220630.xsd#hyfm_ClassOfWarrantOrRightRedemptionPrice"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_561c9ef5-fa4d-4ba3-b7b4-e06a5d677258" xlink:to="loc_hyfm_ClassOfWarrantOrRightRedemptionPrice_7d5f09a0-5598-4823-bcfa-b92ebf561187" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfConsecutiveTradingDaysPriorToNoticeOfRedemption_b8cac4e3-3ff1-4c9f-bacb-aa651afaf5c8" xlink:href="hyfm-20220630.xsd#hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfConsecutiveTradingDaysPriorToNoticeOfRedemption"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_561c9ef5-fa4d-4ba3-b7b4-e06a5d677258" xlink:to="loc_hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfConsecutiveTradingDaysPriorToNoticeOfRedemption_b8cac4e3-3ff1-4c9f-bacb-aa651afaf5c8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharePrice_568fc0ab-b3da-40bf-a88e-b8f70066eeda" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharePrice"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_561c9ef5-fa4d-4ba3-b7b4-e06a5d677258" xlink:to="loc_us-gaap_SharePrice_568fc0ab-b3da-40bf-a88e-b8f70066eeda" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_1350715f-c8a0-407f-a8c7-6c63e4afbd5c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_561c9ef5-fa4d-4ba3-b7b4-e06a5d677258" xlink:to="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_1350715f-c8a0-407f-a8c7-6c63e4afbd5c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised_a93747b1-6e08-4715-9864-fb198c50878a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_561c9ef5-fa4d-4ba3-b7b4-e06a5d677258" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised_a93747b1-6e08-4715-9864-fb198c50878a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromWarrantExercises_42098ce5-ecdb-497f-90a9-81f9235a54e3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromWarrantExercises"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_561c9ef5-fa4d-4ba3-b7b4-e06a5d677258" xlink:to="loc_us-gaap_ProceedsFromWarrantExercises_42098ce5-ecdb-497f-90a9-81f9235a54e3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_WarrantSolicitationFeeExpensePercentageOfNetCashProceedsSolicitedByPlacementAgentsUponExerciseOfWarrantsFollowingCallForRedemption_490787b6-c381-43ed-b85c-0df50968992d" xlink:href="hyfm-20220630.xsd#hyfm_WarrantSolicitationFeeExpensePercentageOfNetCashProceedsSolicitedByPlacementAgentsUponExerciseOfWarrantsFollowingCallForRedemption"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_561c9ef5-fa4d-4ba3-b7b4-e06a5d677258" xlink:to="loc_hyfm_WarrantSolicitationFeeExpensePercentageOfNetCashProceedsSolicitedByPlacementAgentsUponExerciseOfWarrantsFollowingCallForRedemption_490787b6-c381-43ed-b85c-0df50968992d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/STOCKHOLDERSEQUITYOutstandingWarrantsDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#STOCKHOLDERSEQUITYOutstandingWarrantsDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/STOCKHOLDERSEQUITYOutstandingWarrantsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityAbstract_5b326b89-6c3f-496b-8095-192150032262" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EquityAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightTable_215dd541-681e-46f6-9163-4538791b2dda" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityAbstract_5b326b89-6c3f-496b-8095-192150032262" xlink:to="loc_us-gaap_ClassOfWarrantOrRightTable_215dd541-681e-46f6-9163-4538791b2dda" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightAxis_f1545245-e79d-4b69-b3b5-d7a541b5e514" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightTable_215dd541-681e-46f6-9163-4538791b2dda" xlink:to="loc_us-gaap_ClassOfWarrantOrRightAxis_f1545245-e79d-4b69-b3b5-d7a541b5e514" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_0b1224ae-fd44-41cc-9825-bcad6adb7622" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_f1545245-e79d-4b69-b3b5-d7a541b5e514" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_0b1224ae-fd44-41cc-9825-bcad6adb7622" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_InvestorWarrantsPlacementAgentsTrancheOneMember_920d728c-1136-471d-b2a4-145db74ad059" xlink:href="hyfm-20220630.xsd#hyfm_InvestorWarrantsPlacementAgentsTrancheOneMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_0b1224ae-fd44-41cc-9825-bcad6adb7622" xlink:to="loc_hyfm_InvestorWarrantsPlacementAgentsTrancheOneMember_920d728c-1136-471d-b2a4-145db74ad059" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_InvestorWarrantsPlacementAgentsTrancheTwoMember_af4cfd09-a464-4a96-b683-746154ad8e0c" xlink:href="hyfm-20220630.xsd#hyfm_InvestorWarrantsPlacementAgentsTrancheTwoMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_0b1224ae-fd44-41cc-9825-bcad6adb7622" xlink:to="loc_hyfm_InvestorWarrantsPlacementAgentsTrancheTwoMember_af4cfd09-a464-4a96-b683-746154ad8e0c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightLineItems_4e9be955-05ff-4277-a3e8-090b15f23f15" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightTable_215dd541-681e-46f6-9163-4538791b2dda" xlink:to="loc_us-gaap_ClassOfWarrantOrRightLineItems_4e9be955-05ff-4277-a3e8-090b15f23f15" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightOutstanding_cde4cecf-9076-4325-aebc-f39c09932b3c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightOutstanding"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_4e9be955-05ff-4277-a3e8-090b15f23f15" xlink:to="loc_us-gaap_ClassOfWarrantOrRightOutstanding_cde4cecf-9076-4325-aebc-f39c09932b3c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_f5c9daeb-74bd-4a6e-8388-a6ce74bdc5b1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfWarrantOrRightLineItems_4e9be955-05ff-4277-a3e8-090b15f23f15" xlink:to="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_f5c9daeb-74bd-4a6e-8388-a6ce74bdc5b1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/STOCKBASEDCOMPENSATION" xlink:type="simple" xlink:href="hyfm-20220630.xsd#STOCKBASEDCOMPENSATION"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/STOCKBASEDCOMPENSATION" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_ca20fd91-764b-46e8-82ac-0486299c680a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_f242bc0b-c8fe-4498-a17a-5f1a1a87db03" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_ca20fd91-764b-46e8-82ac-0486299c680a" xlink:to="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_f242bc0b-c8fe-4498-a17a-5f1a1a87db03" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/STOCKBASEDCOMPENSATIONTables" xlink:type="simple" xlink:href="hyfm-20220630.xsd#STOCKBASEDCOMPENSATIONTables"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/STOCKBASEDCOMPENSATIONTables" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_e3c6edd2-e2a2-4654-9265-73977b1b253b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfOtherShareBasedCompensationActivityTableTextBlock_a91863b3-f785-4ca4-bfac-a2ddf7e0460b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfOtherShareBasedCompensationActivityTableTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_e3c6edd2-e2a2-4654-9265-73977b1b253b" xlink:to="loc_us-gaap_ScheduleOfOtherShareBasedCompensationActivityTableTextBlock_a91863b3-f785-4ca4-bfac-a2ddf7e0460b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_82c06817-4b04-4851-acca-f4d2567252cf" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_e3c6edd2-e2a2-4654-9265-73977b1b253b" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_82c06817-4b04-4851-acca-f4d2567252cf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/STOCKBASEDCOMPENSATIONNarrativeDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#STOCKBASEDCOMPENSATIONNarrativeDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/STOCKBASEDCOMPENSATIONNarrativeDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_a17a8647-de01-478d-9f6a-007f4e988473" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_6733e061-88b8-465b-854d-eea7244e22f4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_a17a8647-de01-478d-9f6a-007f4e988473" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_6733e061-88b8-465b-854d-eea7244e22f4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_5bc66caa-dcc1-4375-9931-4ee01ef954ab" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanNameAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_6733e061-88b8-465b-854d-eea7244e22f4" xlink:to="loc_us-gaap_PlanNameAxis_5bc66caa-dcc1-4375-9931-4ee01ef954ab" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_3ce38e24-39f4-4ec6-a615-951bfba8fedb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanNameDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameAxis_5bc66caa-dcc1-4375-9931-4ee01ef954ab" xlink:to="loc_us-gaap_PlanNameDomain_3ce38e24-39f4-4ec6-a615-951bfba8fedb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_A2020EmployeeDirectorAndConsultantEquityIncentivePlanMember_70649436-ed56-4cef-831a-408dc31ade5c" xlink:href="hyfm-20220630.xsd#hyfm_A2020EmployeeDirectorAndConsultantEquityIncentivePlanMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_3ce38e24-39f4-4ec6-a615-951bfba8fedb" xlink:to="loc_hyfm_A2020EmployeeDirectorAndConsultantEquityIncentivePlanMember_70649436-ed56-4cef-831a-408dc31ade5c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_ed032465-b314-477c-b0ec-3570ef329208" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_6733e061-88b8-465b-854d-eea7244e22f4" xlink:to="loc_us-gaap_AwardTypeAxis_ed032465-b314-477c-b0ec-3570ef329208" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7447efde-11d3-4ce9-962e-25c59e555b9d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AwardTypeAxis_ed032465-b314-477c-b0ec-3570ef329208" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7447efde-11d3-4ce9-962e-25c59e555b9d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_30711682-e32c-450e-b963-552b38838a94" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7447efde-11d3-4ce9-962e-25c59e555b9d" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_30711682-e32c-450e-b963-552b38838a94" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_ede240d2-f975-4b53-8608-d11b85c39892" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PerformanceSharesMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7447efde-11d3-4ce9-962e-25c59e555b9d" xlink:to="loc_us-gaap_PerformanceSharesMember_ede240d2-f975-4b53-8608-d11b85c39892" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_ec20289f-5dcf-45bd-8546-9c7ce9f6a2f3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeStockOptionMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7447efde-11d3-4ce9-962e-25c59e555b9d" xlink:to="loc_us-gaap_EmployeeStockOptionMember_ec20289f-5dcf-45bd-8546-9c7ce9f6a2f3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_3b1af315-f465-4b82-b9e6-ba69b591212d" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_6733e061-88b8-465b-854d-eea7244e22f4" xlink:to="loc_srt_RangeAxis_3b1af315-f465-4b82-b9e6-ba69b591212d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_5040b618-2fe3-4467-9a11-45faa1d6f05e" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeAxis_3b1af315-f465-4b82-b9e6-ba69b591212d" xlink:to="loc_srt_RangeMember_5040b618-2fe3-4467-9a11-45faa1d6f05e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_7aae03b1-0e92-48fa-9ac6-96c84154f9dc" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_RangeMember_5040b618-2fe3-4467-9a11-45faa1d6f05e" xlink:to="loc_srt_MaximumMember_7aae03b1-0e92-48fa-9ac6-96c84154f9dc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_efdd58f0-3784-46be-8704-a5af4511ad33" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_6733e061-88b8-465b-854d-eea7244e22f4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_efdd58f0-3784-46be-8704-a5af4511ad33" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfEquityPlansMaintained_a4796b9a-7c75-411a-a3b0-f905f591d274" xlink:href="hyfm-20220630.xsd#hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfEquityPlansMaintained"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_efdd58f0-3784-46be-8704-a5af4511ad33" xlink:to="loc_hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfEquityPlansMaintained_a4796b9a-7c75-411a-a3b0-f905f591d274" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_8839edef-4c8c-4094-be69-1e07d1711959" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_efdd58f0-3784-46be-8704-a5af4511ad33" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_8839edef-4c8c-4094-be69-1e07d1711959" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_e4e13489-f0f1-4dd6-9012-ce8adbc2e276" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_efdd58f0-3784-46be-8704-a5af4511ad33" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_e4e13489-f0f1-4dd6-9012-ce8adbc2e276" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_cc825a80-8cd4-4c56-9247-c657308c0fc2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_efdd58f0-3784-46be-8704-a5af4511ad33" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_cc825a80-8cd4-4c56-9247-c657308c0fc2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_4f5717b7-cd43-4a88-aaa3-7b55365b7605" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_efdd58f0-3784-46be-8704-a5af4511ad33" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_4f5717b7-cd43-4a88-aaa3-7b55365b7605" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_3773d3ac-8cde-4632-8afe-f2c65a2d4104" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_efdd58f0-3784-46be-8704-a5af4511ad33" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_3773d3ac-8cde-4632-8afe-f2c65a2d4104" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodNotYetIssued_18f7e9fe-cf51-4b9a-8328-f5fbe41de20a" xlink:href="hyfm-20220630.xsd#hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodNotYetIssued"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_efdd58f0-3784-46be-8704-a5af4511ad33" xlink:to="loc_hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodNotYetIssued_18f7e9fe-cf51-4b9a-8328-f5fbe41de20a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/STOCKBASEDCOMPENSATIONRSUActivityDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#STOCKBASEDCOMPENSATIONRSUActivityDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/STOCKBASEDCOMPENSATIONRSUActivityDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_80564403-e8cc-4fc8-a973-6d30f32466c1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_4d6a87d6-5a99-4d3d-9ba1-567d4a445dfd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_80564403-e8cc-4fc8-a973-6d30f32466c1" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_4d6a87d6-5a99-4d3d-9ba1-567d4a445dfd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_b1ecf12d-494c-4046-bc98-e3f29beccc71" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_4d6a87d6-5a99-4d3d-9ba1-567d4a445dfd" xlink:to="loc_us-gaap_AwardTypeAxis_b1ecf12d-494c-4046-bc98-e3f29beccc71" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_467c1ab3-4cda-4caf-bd0c-f957090aab67" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AwardTypeAxis_b1ecf12d-494c-4046-bc98-e3f29beccc71" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_467c1ab3-4cda-4caf-bd0c-f957090aab67" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_94192c15-7fb7-4bd5-8c0d-3cfc85dffc5a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_467c1ab3-4cda-4caf-bd0c-f957090aab67" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_94192c15-7fb7-4bd5-8c0d-3cfc85dffc5a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_206c0847-aa5e-4b68-8560-ef77329a24df" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_4d6a87d6-5a99-4d3d-9ba1-567d4a445dfd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_206c0847-aa5e-4b68-8560-ef77329a24df" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_87c578d8-d248-4d9e-b738-204c1aa328de" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_206c0847-aa5e-4b68-8560-ef77329a24df" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_87c578d8-d248-4d9e-b738-204c1aa328de" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_2f53746f-6f4a-40c8-93d7-56e1a5ac7e8a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_87c578d8-d248-4d9e-b738-204c1aa328de" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_2f53746f-6f4a-40c8-93d7-56e1a5ac7e8a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_4b27d236-bbb7-4c6b-9416-e0b2512b3157" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_87c578d8-d248-4d9e-b738-204c1aa328de" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_4b27d236-bbb7-4c6b-9416-e0b2512b3157" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_caa31353-8b6d-46b9-90bb-ae4ef81fe9d4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_87c578d8-d248-4d9e-b738-204c1aa328de" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_caa31353-8b6d-46b9-90bb-ae4ef81fe9d4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_d980c0a8-24ba-4b80-86cc-ee9a4387930b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_87c578d8-d248-4d9e-b738-204c1aa328de" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_d980c0a8-24ba-4b80-86cc-ee9a4387930b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_69d1e75a-7c19-402f-91e3-3ef5a790f46c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_87c578d8-d248-4d9e-b738-204c1aa328de" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_69d1e75a-7c19-402f-91e3-3ef5a790f46c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_59a5691a-0d2a-43eb-8c57-9297083858bd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_206c0847-aa5e-4b68-8560-ef77329a24df" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_59a5691a-0d2a-43eb-8c57-9297083858bd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_f8a968e5-d722-4492-ab21-2fbe39922d97" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_59a5691a-0d2a-43eb-8c57-9297083858bd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_f8a968e5-d722-4492-ab21-2fbe39922d97" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_d2ecbaff-a5c7-41a1-a492-08065804fcdd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_59a5691a-0d2a-43eb-8c57-9297083858bd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_d2ecbaff-a5c7-41a1-a492-08065804fcdd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_d62cbb9b-a58b-457f-8190-8f9a13b6dccb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_59a5691a-0d2a-43eb-8c57-9297083858bd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_d62cbb9b-a58b-457f-8190-8f9a13b6dccb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_da8e8f71-cb29-4b2f-9789-acd113d7f661" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_59a5691a-0d2a-43eb-8c57-9297083858bd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_da8e8f71-cb29-4b2f-9789-acd113d7f661" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_abf3342c-5781-47ca-ad0f-fb52fd4024cb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_59a5691a-0d2a-43eb-8c57-9297083858bd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_abf3342c-5781-47ca-ad0f-fb52fd4024cb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/STOCKBASEDCOMPENSATIONPSUActivityDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#STOCKBASEDCOMPENSATIONPSUActivityDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/STOCKBASEDCOMPENSATIONPSUActivityDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_0bce8d19-2000-4be6-9734-8a48e43ab5d7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3cc919fb-2315-48a5-b0a4-8414c5a5fd42" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_0bce8d19-2000-4be6-9734-8a48e43ab5d7" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3cc919fb-2315-48a5-b0a4-8414c5a5fd42" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_0b1f6958-a5c4-4c7b-8571-b2baa4bf1c9b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3cc919fb-2315-48a5-b0a4-8414c5a5fd42" xlink:to="loc_us-gaap_AwardTypeAxis_0b1f6958-a5c4-4c7b-8571-b2baa4bf1c9b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d77761c6-f677-48f5-b8d9-7fe26612a6d3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AwardTypeAxis_0b1f6958-a5c4-4c7b-8571-b2baa4bf1c9b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d77761c6-f677-48f5-b8d9-7fe26612a6d3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_94f6674b-4492-4bd4-b728-174e6ede2c3a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PerformanceSharesMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_d77761c6-f677-48f5-b8d9-7fe26612a6d3" xlink:to="loc_us-gaap_PerformanceSharesMember_94f6674b-4492-4bd4-b728-174e6ede2c3a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_224cd92a-37ea-4ac1-81e2-e247a22d8495" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3cc919fb-2315-48a5-b0a4-8414c5a5fd42" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_224cd92a-37ea-4ac1-81e2-e247a22d8495" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_3c43496e-1734-4425-bcf9-08c2e82ed38e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_224cd92a-37ea-4ac1-81e2-e247a22d8495" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_3c43496e-1734-4425-bcf9-08c2e82ed38e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_f651afc1-4fc8-4f40-87fd-ada69c887ef2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_3c43496e-1734-4425-bcf9-08c2e82ed38e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_f651afc1-4fc8-4f40-87fd-ada69c887ef2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_4d0edb41-01c7-4966-a639-81b0da0a3b72" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_3c43496e-1734-4425-bcf9-08c2e82ed38e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_4d0edb41-01c7-4966-a639-81b0da0a3b72" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_f4d6c061-5abd-4020-b689-e8208efe2609" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_3c43496e-1734-4425-bcf9-08c2e82ed38e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_f4d6c061-5abd-4020-b689-e8208efe2609" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_2fdc1942-ee6e-4d76-8859-5d84be7437d2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingRollForward_3c43496e-1734-4425-bcf9-08c2e82ed38e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_2fdc1942-ee6e-4d76-8859-5d84be7437d2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_6cbc18a0-7f71-4609-a965-657a714d589b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_224cd92a-37ea-4ac1-81e2-e247a22d8495" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_6cbc18a0-7f71-4609-a965-657a714d589b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_195203f7-09d3-4c35-85c7-15b5bbad581e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_6cbc18a0-7f71-4609-a965-657a714d589b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_195203f7-09d3-4c35-85c7-15b5bbad581e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2d8dc791-33e7-43ea-ba06-a30f4df69a62" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_6cbc18a0-7f71-4609-a965-657a714d589b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2d8dc791-33e7-43ea-ba06-a30f4df69a62" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_55c8e741-6098-4b2c-a751-0ae71395ab0e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_6cbc18a0-7f71-4609-a965-657a714d589b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_55c8e741-6098-4b2c-a751-0ae71395ab0e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_ce5f762d-ef7f-4110-a2cf-b3f433f4a0b7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_6cbc18a0-7f71-4609-a965-657a714d589b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_ce5f762d-ef7f-4110-a2cf-b3f433f4a0b7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/STOCKBASEDCOMPENSATIONStockOptionActivityDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#STOCKBASEDCOMPENSATIONStockOptionActivityDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/STOCKBASEDCOMPENSATIONStockOptionActivityDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_cad0196b-5a5c-41d7-a987-765b783f20c2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_70776e91-45fc-4fc7-892c-37c1d32d4ea4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_cad0196b-5a5c-41d7-a987-765b783f20c2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_70776e91-45fc-4fc7-892c-37c1d32d4ea4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_01853811-547f-4726-ad65-f126d3e46bc3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_70776e91-45fc-4fc7-892c-37c1d32d4ea4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_01853811-547f-4726-ad65-f126d3e46bc3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_11254942-b619-4526-b730-4d033af991d6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_70776e91-45fc-4fc7-892c-37c1d32d4ea4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_11254942-b619-4526-b730-4d033af991d6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_24ce1efd-2244-4db3-a89f-38abbe464ca3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_70776e91-45fc-4fc7-892c-37c1d32d4ea4" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_24ce1efd-2244-4db3-a89f-38abbe464ca3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_c867a625-fd78-469e-b4ce-bd6526824da1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_70776e91-45fc-4fc7-892c-37c1d32d4ea4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_c867a625-fd78-469e-b4ce-bd6526824da1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_810f7f29-ee4d-4a51-a131-36202753e271" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_70776e91-45fc-4fc7-892c-37c1d32d4ea4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_810f7f29-ee4d-4a51-a131-36202753e271" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_dbc21c76-cc5a-478d-88fd-ce824eafc608" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_70776e91-45fc-4fc7-892c-37c1d32d4ea4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_dbc21c76-cc5a-478d-88fd-ce824eafc608" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_d019a2a1-5df6-4e48-ab4f-da787719b49c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_cad0196b-5a5c-41d7-a987-765b783f20c2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_d019a2a1-5df6-4e48-ab4f-da787719b49c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_43ad3dcb-66c6-4a6c-ac05-2497bb0f8456" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_cad0196b-5a5c-41d7-a987-765b783f20c2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_43ad3dcb-66c6-4a6c-ac05-2497bb0f8456" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_0506e70a-ac9f-4060-a9be-6a6b2a44f302" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_cad0196b-5a5c-41d7-a987-765b783f20c2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_0506e70a-ac9f-4060-a9be-6a6b2a44f302" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_604ff150-fc5f-499c-b94a-0cc94cfbb301" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_0506e70a-ac9f-4060-a9be-6a6b2a44f302" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_604ff150-fc5f-499c-b94a-0cc94cfbb301" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_2b0c59f2-010a-4cc0-ad3c-2a429bee9946" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_0506e70a-ac9f-4060-a9be-6a6b2a44f302" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_2b0c59f2-010a-4cc0-ad3c-2a429bee9946" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_31653770-7ba0-4859-adaa-390ca45c239c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_0506e70a-ac9f-4060-a9be-6a6b2a44f302" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_31653770-7ba0-4859-adaa-390ca45c239c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_8fdd8b1f-f62f-4816-aa27-07f0ab5f690b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_0506e70a-ac9f-4060-a9be-6a6b2a44f302" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice_8fdd8b1f-f62f-4816-aa27-07f0ab5f690b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_6da78481-5670-487b-a172-8871ee2f6d3e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_0506e70a-ac9f-4060-a9be-6a6b2a44f302" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice_6da78481-5670-487b-a172-8871ee2f6d3e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_2bfe9aee-8a08-4c1a-8ba6-6d57684ed39e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_0506e70a-ac9f-4060-a9be-6a6b2a44f302" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_2bfe9aee-8a08-4c1a-8ba6-6d57684ed39e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_35c5ff8f-f3f7-4111-942f-31ca6929e4b3" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_cad0196b-5a5c-41d7-a987-765b783f20c2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_35c5ff8f-f3f7-4111-942f-31ca6929e4b3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice_e27dad89-506c-44bf-b181-36d277fce14c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_cad0196b-5a5c-41d7-a987-765b783f20c2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice_e27dad89-506c-44bf-b181-36d277fce14c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_8099a1da-dcce-4745-9bfd-80d43b4ad975" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract"/>
<link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_cad0196b-5a5c-41d7-a987-765b783f20c2" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_8099a1da-dcce-4745-9bfd-80d43b4ad975" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageOutstandingPriceFairValue_b00e591d-3f59-48e4-a9ec-b1d5f57bf9e4" xlink:href="hyfm-20220630.xsd#hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageOutstandingPriceFairValue"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_8099a1da-dcce-4745-9bfd-80d43b4ad975" xlink:to="loc_hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageOutstandingPriceFairValue_b00e591d-3f59-48e4-a9ec-b1d5f57bf9e4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantedInPeriodWeightedAverageGrantDateFairValue_a108258c-c680-4797-89d9-5bac652f7b94" xlink:href="hyfm-20220630.xsd#hyfm_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantedInPeriodWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_8099a1da-dcce-4745-9bfd-80d43b4ad975" xlink:to="loc_hyfm_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantedInPeriodWeightedAverageGrantDateFairValue_a108258c-c680-4797-89d9-5bac652f7b94" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantPrice_01a41e75-1d79-4f53-a338-edcfc3881d3d" xlink:href="hyfm-20220630.xsd#hyfm_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantPrice"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_8099a1da-dcce-4745-9bfd-80d43b4ad975" xlink:to="loc_hyfm_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageGrantPrice_01a41e75-1d79-4f53-a338-edcfc3881d3d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageGrantDateFairValue_44318c39-caaf-4aa2-8b55-2e27ffd4a7b6" xlink:href="hyfm-20220630.xsd#hyfm_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_8099a1da-dcce-4745-9bfd-80d43b4ad975" xlink:to="loc_hyfm_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageGrantDateFairValue_44318c39-caaf-4aa2-8b55-2e27ffd4a7b6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue_eb39f8c9-55ff-4564-98e3-559484adcc9e" xlink:href="hyfm-20220630.xsd#hyfm_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_8099a1da-dcce-4745-9bfd-80d43b4ad975" xlink:to="loc_hyfm_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue_eb39f8c9-55ff-4564-98e3-559484adcc9e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageOutstandingPriceFairValue_9f8cab2f-73c2-4227-8b69-3697c5c7c338" xlink:href="hyfm-20220630.xsd#hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageOutstandingPriceFairValue"/>
<link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_8099a1da-dcce-4745-9bfd-80d43b4ad975" xlink:to="loc_hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageOutstandingPriceFairValue_9f8cab2f-73c2-4227-8b69-3697c5c7c338" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageGrantPrice_0b2a24cd-ad51-456a-8dfb-f44da13d2344" xlink:href="hyfm-20220630.xsd#hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageGrantPrice"/>
<link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_cad0196b-5a5c-41d7-a987-765b783f20c2" xlink:to="loc_hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageGrantPrice_0b2a24cd-ad51-456a-8dfb-f44da13d2344" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageGrantPrice_3e0e7b68-77f8-4ae4-a51e-94945d28b72e" xlink:href="hyfm-20220630.xsd#hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageGrantPrice"/>
<link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_cad0196b-5a5c-41d7-a987-765b783f20c2" xlink:to="loc_hyfm_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageGrantPrice_3e0e7b68-77f8-4ae4-a51e-94945d28b72e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_d63429f6-b831-474d-ac80-ba65b14962f5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract"/>
<link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_cad0196b-5a5c-41d7-a987-765b783f20c2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_d63429f6-b831-474d-ac80-ba65b14962f5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_5452ffa3-318a-4963-9b39-c561c8f2f586" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_d63429f6-b831-474d-ac80-ba65b14962f5" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_5452ffa3-318a-4963-9b39-c561c8f2f586" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1_b5c49695-d3b2-4a2a-8534-838b4d9b451c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1"/>
<link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_cad0196b-5a5c-41d7-a987-765b783f20c2" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1_b5c49695-d3b2-4a2a-8534-838b4d9b451c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1_eb43d584-818d-4b12-8f18-31e120a277ff" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1"/>
<link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_cad0196b-5a5c-41d7-a987-765b783f20c2" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1_eb43d584-818d-4b12-8f18-31e120a277ff" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/STOCKBASEDCOMPENSATIONUnvestedStockOptionActivityDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#STOCKBASEDCOMPENSATIONUnvestedStockOptionActivityDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/STOCKBASEDCOMPENSATIONUnvestedStockOptionActivityDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_8677d43c-0efb-4abc-95c9-c732532d98ca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_df937161-df2a-4811-b233-08993b35bfe7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_8677d43c-0efb-4abc-95c9-c732532d98ca" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_df937161-df2a-4811-b233-08993b35bfe7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares_f640a9f0-f1a6-436b-b438-b9da15cd3aa6" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_df937161-df2a-4811-b233-08993b35bfe7" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares_f640a9f0-f1a6-436b-b438-b9da15cd3aa6" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_b0ba0567-7a9b-4b2f-a086-24af617ced88" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_df937161-df2a-4811-b233-08993b35bfe7" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_b0ba0567-7a9b-4b2f-a086-24af617ced88" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares_da66961a-92ce-4947-9c01-7e12b99af506" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_df937161-df2a-4811-b233-08993b35bfe7" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares_da66961a-92ce-4947-9c01-7e12b99af506" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares_37526afe-83db-47c7-bf6b-526a747898cd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_df937161-df2a-4811-b233-08993b35bfe7" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares_37526afe-83db-47c7-bf6b-526a747898cd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares_65551011-23d5-4db9-8dee-7a32d16ff1ca" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_df937161-df2a-4811-b233-08993b35bfe7" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares_65551011-23d5-4db9-8dee-7a32d16ff1ca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_e112fd69-4063-479a-9d9a-68d330c4279e" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_8677d43c-0efb-4abc-95c9-c732532d98ca" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_e112fd69-4063-479a-9d9a-68d330c4279e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue_d7ee9aa9-d3aa-4cc0-8f90-d6c9841060ae" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_e112fd69-4063-479a-9d9a-68d330c4279e" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue_d7ee9aa9-d3aa-4cc0-8f90-d6c9841060ae" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2031272b-8291-4841-ab13-d809e3a8e294" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_e112fd69-4063-479a-9d9a-68d330c4279e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2031272b-8291-4841-ab13-d809e3a8e294" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue_96f5b806-f65b-49af-914f-ba7f815a6928" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_e112fd69-4063-479a-9d9a-68d330c4279e" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue_96f5b806-f65b-49af-914f-ba7f815a6928" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue_f8063aaf-84e9-4050-a695-1e3d2d06eee4" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_e112fd69-4063-479a-9d9a-68d330c4279e" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue_f8063aaf-84e9-4050-a695-1e3d2d06eee4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue_826bf027-1ae0-4e77-9669-7899eaa1139d" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_e112fd69-4063-479a-9d9a-68d330c4279e" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue_826bf027-1ae0-4e77-9669-7899eaa1139d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/COMMITMENTSCONTINGENCIESANDRELATEDPARTYTRANSACTIONS" xlink:type="simple" xlink:href="hyfm-20220630.xsd#COMMITMENTSCONTINGENCIESANDRELATEDPARTYTRANSACTIONS"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/COMMITMENTSCONTINGENCIESANDRELATEDPARTYTRANSACTIONS" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_0f1bfe2d-b02d-4083-a24b-e71c31d769b7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_CommitmentsAndContingenciesAndRelatedPartyTransactionsTextBlock_62b88ea6-20a5-488a-b243-6b6b86f58312" xlink:href="hyfm-20220630.xsd#hyfm_CommitmentsAndContingenciesAndRelatedPartyTransactionsTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_0f1bfe2d-b02d-4083-a24b-e71c31d769b7" xlink:to="loc_hyfm_CommitmentsAndContingenciesAndRelatedPartyTransactionsTextBlock_62b88ea6-20a5-488a-b243-6b6b86f58312" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/COMMITMENTSCONTINGENCIESANDRELATEDPARTYTRANSACTIONSDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#COMMITMENTSCONTINGENCIESANDRELATEDPARTYTRANSACTIONSDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/COMMITMENTSCONTINGENCIESANDRELATEDPARTYTRANSACTIONSDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_9758790f-cffd-4d22-a240-aebb8c293bf2" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_0714273f-c2cb-4210-9b6b-a343d89a6da7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_9758790f-cffd-4d22-a240-aebb8c293bf2" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_0714273f-c2cb-4210-9b6b-a343d89a6da7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_a2b44441-01de-49d8-8b68-bac258e78923" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_0714273f-c2cb-4210-9b6b-a343d89a6da7" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_a2b44441-01de-49d8-8b68-bac258e78923" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_12ce7c89-384f-4abe-98e9-01803f1fa44b" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_a2b44441-01de-49d8-8b68-bac258e78923" xlink:to="loc_us-gaap_RelatedPartyDomain_12ce7c89-384f-4abe-98e9-01803f1fa44b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestorMember_2c5aba3a-32fe-4b01-b162-f9d4b916788a" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestorMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RelatedPartyDomain_12ce7c89-384f-4abe-98e9-01803f1fa44b" xlink:to="loc_us-gaap_InvestorMember_2c5aba3a-32fe-4b01-b162-f9d4b916788a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_6036047b-f909-44b7-88a4-36266f7074fb" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementGeographicalAxis"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_0714273f-c2cb-4210-9b6b-a343d89a6da7" xlink:to="loc_srt_StatementGeographicalAxis_6036047b-f909-44b7-88a4-36266f7074fb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_0ac09dea-8c4a-4619-81d7-f333d0caa290" xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_StatementGeographicalAxis_6036047b-f909-44b7-88a4-36266f7074fb" xlink:to="loc_srt_SegmentGeographicalDomain_0ac09dea-8c4a-4619-81d7-f333d0caa290" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_PetalumaCaliforniaMember_1710ee73-cb10-453e-bd6c-d22eeb881edb" xlink:href="hyfm-20220630.xsd#hyfm_PetalumaCaliforniaMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_srt_SegmentGeographicalDomain_0ac09dea-8c4a-4619-81d7-f333d0caa290" xlink:to="loc_hyfm_PetalumaCaliforniaMember_1710ee73-cb10-453e-bd6c-d22eeb881edb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_bcd65de6-e0d1-4368-917e-bc6c55d46b19" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_0714273f-c2cb-4210-9b6b-a343d89a6da7" xlink:to="loc_us-gaap_RelatedPartyTransactionLineItems_bcd65de6-e0d1-4368-917e-bc6c55d46b19" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseExpense_9ddf0a85-64ae-422a-9ede-a943fc0dd0f7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseExpense"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_bcd65de6-e0d1-4368-917e-bc6c55d46b19" xlink:to="loc_us-gaap_OperatingLeaseExpense_9ddf0a85-64ae-422a-9ede-a943fc0dd0f7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/FAIRVALUEMEASUREMENTS" xlink:type="simple" xlink:href="hyfm-20220630.xsd#FAIRVALUEMEASUREMENTS"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/FAIRVALUEMEASUREMENTS" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_2867ed8e-5599-4e3e-9e42-8ba79d6a3cd7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueDisclosuresAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosuresTextBlock_0b537fca-ec1c-47f9-a085-4f5113bd80dd" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueDisclosuresTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_2867ed8e-5599-4e3e-9e42-8ba79d6a3cd7" xlink:to="loc_us-gaap_FairValueDisclosuresTextBlock_0b537fca-ec1c-47f9-a085-4f5113bd80dd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/FAIRVALUEMEASUREMENTSTables" xlink:type="simple" xlink:href="hyfm-20220630.xsd#FAIRVALUEMEASUREMENTSTables"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/FAIRVALUEMEASUREMENTSTables" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_46dcd371-b1a5-4416-8ba1-84bb9e50ba6c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueDisclosuresAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_4842e8df-9be0-4b3b-9f05-27f2d0b37e8c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_46dcd371-b1a5-4416-8ba1-84bb9e50ba6c" xlink:to="loc_us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_4842e8df-9be0-4b3b-9f05-27f2d0b37e8c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
<link:roleRef roleURI="http://www.hydrofarm.com/role/FAIRVALUEMEASUREMENTSDetails" xlink:type="simple" xlink:href="hyfm-20220630.xsd#FAIRVALUEMEASUREMENTSDetails"/>
<link:presentationLink xlink:role="http://www.hydrofarm.com/role/FAIRVALUEMEASUREMENTSDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosuresAbstract_84db8ecf-5dba-4f91-af51-37f9d96beca8" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueDisclosuresAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_0f178945-a85e-4ea6-a5ca-eda06c49e809" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueDisclosuresAbstract_84db8ecf-5dba-4f91-af51-37f9d96beca8" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_0f178945-a85e-4ea6-a5ca-eda06c49e809" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_25b44580-bf93-47e4-8e45-f80ad33b801c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_0f178945-a85e-4ea6-a5ca-eda06c49e809" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_25b44580-bf93-47e4-8e45-f80ad33b801c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_ae3eec70-c9aa-4800-a7d9-1563327dce31" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_25b44580-bf93-47e4-8e45-f80ad33b801c" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_ae3eec70-c9aa-4800-a7d9-1563327dce31" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_8827b37b-97f6-4fb9-af12-4ae28f128b23" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueInputsLevel2Member"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_ae3eec70-c9aa-4800-a7d9-1563327dce31" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_8827b37b-97f6-4fb9-af12-4ae28f128b23" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_67e35512-e6ab-4a6a-a6b7-eeffd10cef69" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_0f178945-a85e-4ea6-a5ca-eda06c49e809" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_67e35512-e6ab-4a6a-a6b7-eeffd10cef69" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_0d95a0cd-c848-4328-ba68-f4da756524a1" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_67e35512-e6ab-4a6a-a6b7-eeffd10cef69" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_0d95a0cd-c848-4328-ba68-f4da756524a1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_e58a2c1d-5ab3-4208-a3a4-d070ebdbffbb" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_0d95a0cd-c848-4328-ba68-f4da756524a1" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_e58a2c1d-5ab3-4208-a3a4-d070ebdbffbb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_7ccf0e9f-1b08-4af3-8fd6-7689fb2b1d2c" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
<link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_0d95a0cd-c848-4328-ba68-f4da756524a1" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_7ccf0e9f-1b08-4af3-8fd6-7689fb2b1d2c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_ffd83a33-b356-4c25-8578-e34da57cdb65" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_0d95a0cd-c848-4328-ba68-f4da756524a1" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_ffd83a33-b356-4c25-8578-e34da57cdb65" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_2637fbae-7607-4f5b-ab31-5c1a3c911b24" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_0f178945-a85e-4ea6-a5ca-eda06c49e809" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_2637fbae-7607-4f5b-ab31-5c1a3c911b24" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_e4e64283-719a-449f-8471-a6f9323ac9b7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_2637fbae-7607-4f5b-ab31-5c1a3c911b24" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_e4e64283-719a-449f-8471-a6f9323ac9b7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_hyfm_TermLoanMember_fb2d1fc7-6dd5-44c9-a997-fa3175ec105e" xlink:href="hyfm-20220630.xsd#hyfm_TermLoanMember"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_e4e64283-719a-449f-8471-a6f9323ac9b7" xlink:to="loc_hyfm_TermLoanMember_fb2d1fc7-6dd5-44c9-a997-fa3175ec105e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_1cf91b63-a140-40ac-be06-ced96df51d13" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
<link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_0f178945-a85e-4ea6-a5ca-eda06c49e809" xlink:to="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_1cf91b63-a140-40ac-be06-ced96df51d13" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_f0f67723-4731-413f-bd53-832b7b045aa5" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_1cf91b63-a140-40ac-be06-ced96df51d13" xlink:to="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_f0f67723-4731-413f-bd53-832b7b045aa5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_6392cb27-c62f-43bb-8b2d-8b3d7dfe96d7" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtFairValue"/>
<link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_f0f67723-4731-413f-bd53-832b7b045aa5" xlink:to="loc_us-gaap_LongTermDebtFairValue_6392cb27-c62f-43bb-8b2d-8b3d7dfe96d7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</link:presentationLink>
</link:linkbase>

1 Subsequent Filing that References this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

11/09/22  Hydrofarm Holdings Group, Inc.    S-3                    6:994K                                   Toppan Merrill/FA
↑Top
Filing Submission 0001628280-22-021970   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
About — Privacy — Redactions — Help — Mon., Apr. 29, 12:20:13.1am ET