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NFT System Today, we will go over the Nutrient Film Technique (NFT) system. The NFT is a popular hydroponics system for home growers and is usually used to grow small, fast-growing plants such as lettuce. Commercial growers also often use NFT systems to grow various kinds of herbs and baby greens. The advantage of an NFT system is that the plant roots are properly exposed to the oxygen, nutrients, and water the ...