This is a collection of sources of hydroponics information and supplies. I’ve collected these from posts on Usenet and various email lists, with thanks to the individuals who provided the information. Remember, the people that make their money from selling hydroponic supplies often include valuable information as well, check out their sites even if you don’t think you’ll be buying from them!
Information:
Chris’ Hydroponic Broccoli & Tomatoes
Dunk's New Aero-Hydroponic System
Floating Hydroponic System: how to build (go UF, my alma mater!)
Growing Hydroponic Tomatoes: tutorial
Hydroponic system for highschool students
Hydroponics Society of America includes a mailing list
Mineral Deficiencies in Tomatoes
Pipe Dreams (includes hydroponics-related bulletin board)
PVC Hoophouse: how to build
Truman’s Garden: computerized watering
Warren Furlow’s setup
Whitney’s Orchard hydroponic setup
Whitney’s Orchard aeroponics
Magazines
Overgrow (marijuana growers’ magazine)
Practical Hydroponics & Greenhouses
Suppliers/U.S.
Aeroponics International (TONS of useful info as well!)
Future Garden (aka How-To Hydroponics)
Gardening Supplies (just promotes "Secrets to a Successful Greenhouse and Business" by Ted M. Taylor
GrayStone Creations (sells Rio pumps as well as fountain-making supplies)
Home Harvest Garden Supply Online
Interior Water Gardens: growing orchids in hydroculture
International Greenhouse Company (aka The Greenhouse Catalog)
Sea of Green Urban Garden Systems
Simply Hydroponics and Organics Online
Suppliers/Australia & NZ
Stocker Horticultural & Hydroponic Supplies
Suppliers/Other
21st Century Gardener Canada
Homegrown Hydroponics Canada
Rambridge Wholesale Hydroponics Canada
Other
Container Gardening: City Dweller’s Guide
Lists of sites