Our mailing address and principal place of business is:

Discount Hydroponics of Riverside
4745 Hiers Ave.
Riverside, CA 92505 USA
(951) 689-4575
(951) 343-3087 Fax

Our Customer Service Telephone hours are:

T-S 10:00 a.m. to 6:00 p.m. PST
S-M 10:00 a.m. to 2:00 p.m. PST


Email our Customer Service at


Email our Development Team at regarding technical difficulties with the website. Please be as specific as possible regarding the issue. Include the browser and version, operating system, and any steps to replicate the issue.

We never send unsolicited e-mail. If you sign up for our newsletter, we will be the only ones sending you something.  You will be able to unsubscribe from any communications from us if you do not wish to continue to receive our newsletters. We do not sell, rent or trade e-mail addresses. We send email to acknowledge your orders with us. Under no circumstances would we ever expose any of your financial information (e.g. credit card number) in email.