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• Business: Agriculture and Forestry: Horticulture: Materials and Supplies: Hydroponics  (19)
• Home: Gardening: Hydroponic  (16)
• Shopping: Home and Garden: Hydroponics  (69)

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	Spanish  (6)

• Antarctica Hydroponics - Information on how many varieties of fresh fruit and vegetables are being grown under glass on this continent.
• Crop Physiology Laboratory - Hydroponics - Excellent source of information for recirculating hydroponics methodology from Utah State University.
• The Growing Edge - A bimonthly magazine dedicated to hydroponics, aquaponics, and greenhouse growing. Provides a wealth of free information for soilless growers.
• Growing Hydroponic Tomatoes - Interactive web site from the University of Arizona provides practical, accurate information on growing hydroponic tomatoes for students, hobbyists, and beginning growers.
• History of Hydroponics - Gary V. Deutschmann covers the history and future of hydroponic gardening.
• Home Hydroponics - An excellent introduction to the hydroponic methodology from the Virginia Cooperative Extension.
• Hydroponic Lettuce Production - Details of setting up and running a lettuce production facility using Controlled Environment Agriculture techniques. Illustrated with descriptive photos. Cornell University.
• 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.
• Hydroponics for India - Optimus Interweave Australia offers hydroponics consultancy services to Indian horticulture, providing technology which will enable entrepreneurs to cultivate fresh produce in hydroponic tunnels.
• Hydroponics Online School - Provides a course on hydroponic cultivation.
• Hydroponics Project - Photographic presentation of hydroponics project at Colorado State University.
• Hydroponics Resource for Inexpensive Startups - Secrets for starting hydroponic businesses. Includes information about hydroponic nutrients, maintenance, production, greenhouses, and marketing.
• Hydroponics Systems - An informational site which tells you about various different types of hydroponics systems.
• Institute for Simplified Hydroponics - Dedicated to supporting efforts to use simplified hydroponics to reduce global hunger and poverty. Offers classes and activities to support the education of simplified hydroponics, especially in developing nations.
• Production of CEA-grown Hydroponic Spinach - Publication by the Controlled Environment Agricultural (CEA) Program of the College of Agriculture and Life Sciences at Cornell University. An electronic handbook for the production of CEA hydroponic spinach.
• Role of Perlite in Hydroponic Culture - A research report issued by the Perlite Institute, Inc. by Dr. David A. Hall, Principal of the Pershore College of Horiculture in the United Kingdom
• SoCal Aquaponics - Aquaponics is a system that integrates aquaculture with hydroponics, the soil-free cultivation of plants. SoCal provides information on hydroponics, aquaponics, aquaculture and the solar greenhouse.
• Vitaran HC - Software for calculating nutrition formulations in hydroponic applications. Both site and software in Spanish and English.