NFT GT Grow SystemsGT SYSTEMS: NUTRIENT FILM TECHNIQUE (NFT) Achieve up to 3 x greater yields than traditional soil methods! The original hydroponics system. First launched by NUT Systems in 1976. HOW IT WORKS? In a GT System the nutrient solution is contained in a tank. Your plants sit on a tray above the tank and nutrient solution is pumped up to the tray, which then flows over the roots of your plants, providing them with all the elements they need. Unused nutrient