J.P. Morgan Securities LLC

383 Madison Avenue

New York, New York 10179


Stifel, Nicolaus & Company, Incorporated

One South Street, 15th Floor

Baltimore, Maryland 21202


April 26, 2021




U.S. Securities and Exchange Commission

Division of Corporation Finance

100 F Street, N.E.

Washington, D.C. 20549


Re:Hydrofarm Holdings Group, Inc.

Registration Statement on Form S-1 (File No. 333-255510)

Request for Acceleration of Effective Date


Ladies and Gentlemen:


In accordance with Rule 461 under the Securities Act of 1933, as amended (the “Act”), we, as representatives of the several underwriters, hereby join in the request of Hydrofarm Holdings Group, Inc. (the “Company”) for acceleration of the effective date of the above-named Registration Statement so that it becomes effective at 4:00 PM, Eastern Time, on April 28, 2021, or as soon thereafter as practicable, or at such other time as the Company or its outside counsel, Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C., request by telephone that such Registration Statement be declared effective.


Pursuant to Rule 460 under the Act, we, as representatives of the several underwriters, wish to advise you that that there will be distributed to each underwriter or dealer, who is reasonably anticipated to participate in the distribution of the securities, as many copies of the preliminary prospectus included in the above-named Registration Statement as appears to be reasonable to secure adequate distribution of the preliminary prospectus.


We, the undersigned, as representatives of the several underwriters, have complied and will comply, and we have been informed by the participating underwriters that they have complied and will comply, with the requirements of Rule 15c2-8 under the Securities Exchange Act of 1934, as amended.





  Very truly yours,

Acting severally on behalf of themselves and the several underwriters


  By: /s/ Jaclyn Berkley
  Name: Jaclyn Berkley
  Title: Vice President


  By: /s/ Craig DeDomenico         
  Name: Craig DeDomenico                                 
  Title: Managing Director, Equity Capital Markets


[Signature Page to Underwriters’ Acceleration Request]