Hydroponics Online

Hydroponics tutorials, forum, free garden designs and descriptions plus photos and grower bulletin boards.
http://www.hydroponicsonline.com/

Practical Hydroponics Magazine

An Australian bi-monthly hydroponics magazine with a handful of free articles for online reference.
http://www.hydroponics.com.au

Gardenweb Hydroponics Forum

Forum for hydroponic discussions catering to home hobbyists.
http://forums.gardenweb.com/forums/hydro/

Virginia Cooperative Extension - Home Hydroponics

An introduction describing plant requirements, types of systems and media plus some nutrient basics and descriptions of common deficiencies.
http://www.ext.vt.edu/pubs/envirohort/426-084/426-084.html

S.H.A.R.P. The Super Hydroponic Awesome Radish Project

Introductory and advanced home hydroponic concepts including lesson plans for teachers. Includes links and an FAQ.
http://library.thinkquest.org/C0110342/index.html

Grow Your Own Vegetables Without Soil

An overview of hydroponics with background information, explanations of different hydroponic techniques, and instructions on how to make a hydroponic system work. Includes information on nutrient management.
http://edis.ifas.ufl.edu/scripts/htmlgen.exe?DOCUMENT_VH030

Hydroponics At Home

An overview of hydroponic techniques prepared by the Michigan State Extension Service.
http://www.msue.msu.edu/msue/imp/mod03/03900048.html

Hydro For Hunger

Members of the hydroponic supply industry use their resources to contribute to agencies fighting world hunger. Participants, programs, products, links, press releases, and ways to contribute.
http://www.hydroforhunger.org

Hydroponic Gardening @ Suite101.com

A community site which offers articles, links and discussions pertaining to hydroponics.
http://www.suite101.com/welcome.cfm/hydroponic_gardening

Ray Schneider's Weedless Garden

Pictures and descriptions of indoor and outdoor systems devised by a hobbyist.
http://users.adelphia.net/~schneirj/hydro.htm

Hydroponics as a Hobby

A circular from the Extension at University of Illinois at Urbana-Champaign, offers a basic history and guide to hobby hydroponics.
http://www.ag.uiuc.edu/~vista/html_pubs/hydro/hydrotoc.html

Hydroponic Gardening - Maximum Yield

Web version of a how-to hydroponic gardening and indoor gardening bi-monthly magazine. Offers articles, special features, contests, contact information, availability and archives.
http://www.maximumyield.com/

Simply Hydroponics - Hydroponic University

A series of basic tutorials, FAQ's, free system plans, and contact information for detailed questions.
http://www.simplyhydro.com

Jack's hydroponic info pages

Jack's Hydroponic Info Pages provide extensive info on gardening indoors with Hydroponics for the newbie and for the expert gardener.
http://www.hydroponics.com/info

Abigal Gordons Home Hydroponics

Basic guide to operating a Home Hydroponic Garden.
http://www.geocities.com/green_cache/hydroponics.html

What Is Hydroponics

Simply written guide to hydroponics. Covers systems, mediums, nutrients, and history with a links page and introduction also provided.
http://www.hydroponics.3dmega.com

The World of Hydroponics

Large collection of related articles and FAQs
http://www.hydor.eng.br/Pag3-1.htm

HydroJoe's Hydroponics Page

Discussion and pictures of drip, flood and drain, wick, and combo systems along with a message board.
http://hydrojoe.servebeer.com

Paul's Hydroponic and NFT Growing Page

Practical information and experiences from a hobby grower. Including introductions on the various growing methods available.
http://nft.ellams.com/