Deep flow technique is a type of hydroponic gardening where plants are planted in shallow beds, and a nutrient solution is constantly flowed over and around the root zones of the plants. The system is ideal for plants without deep root systems, and plants that have quick grow cycles. As the nutrient solution flows away from the plant roots for short periods of time, deep flow technique is more suitable for plants that tolerate or benefit from slightly drying out between waterings. Deep flow technique is commonly used in aquatic crops to ensure that aquatic crops receive the adequate nutrients. Often used in flooded, wet, warm environments, the deep flow technique has been shown to be particularly beneficial to watercress, rice, and water chestnut plants. This technique is also used in regions where it is impossible or difficult to grow fresh and leafy vegetables.
Floating hydroponics is a type of DFT, which is used for vegetable planting at moment. It is composed of nutrient solution tank, planting plate, nutrient solution pool, nutrient circulation system, etc. The nutrient solution tank is usually plastic plate of hot galvanized plate.