1. the technique of air is an old technique. There is air, using air or blower. Providing oxygen into the water is similar to the Aquarium Cabinet, This technique, there is no circulation of water or solvents.2. circulating water technique. This technique is similar to the main techniques for air, but the difference would be the oxygen in water is to rely on the flow of water or slurry plant nutrition.3. among the DNA techniques (Nutrient Flow Technique, NFT) is a technique in which water or slurry circulation. There is a principle that root crops must be immersed in the baen tilt a trough with 1-3 per cent, and there is water or slurry plant nutrition flows through a thin layer of skin at specific intervals so the roots will get the proper moisture and oxygen.4. spraying technique is a powerful technique of root water circulation plants do not have roots in water or solvents, but raised in the Cabinet floating in a dark room and cultivated preserve moisture with water mist from nozzles, placed intermittently.5. technical plants to animals as to plants grown using techniques such as corn, sorghum, wheat, animals are grown in cultivation Cabinet has control of the environment, water or slurry with circulating water plant nutrients by spraying a mist spray, drip tray, or use common methods.
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