Nutrient Film Technique in Hydroponics

Nutrient film technique (NFT) comprises a type of hydroponics, or soil-less, gardening system in which crops are planted in a growing medium and given precise amounts of nutrients.

Nutrient film technique (NFT) comprises a type of hydroponics, or soil-less, gardening system in which
crops are planted in a growing medium and given precise amounts of nutrients. Hydroponics gardeners
often obtain higher yields than those using traditional methods.

Using NFT, plants are planted alongside a PVC gutter which is constantly fed by a very shallow stream of water rich in nutrients. As the plants grow, the roots become entangled in the gutter. The parts of the plant above the water receive fresh oxygen to promote growth.

Precision feeding and watering is ensured by carefully measuring the quantities of water and nutrients.
Time-activated misting, used in other hydroponics systems, can be less effective in getting the nutrients to the roots. Submersion techniques can cause the roots to dry out when the water is drained into a reservoir. With NFT, the roots receive a constant supply of water and air. Drying is never a problem.

NFT also requires a low startup investment compared to other hydroponics systems such as misting and ebb-and-flow methods. NFT is also sound environmentally because there is no waste. It supplies the same nutrient-rich water through successive cycles. If you're starting a hydroponics garden, you might consider NFT because it is easy and efficient. No soil sterilization is required and crop turnaround is quick.

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