The Hydroponic raft consists of a rigid styrofoam platform cut to fit the size of the reservoir and fitted with “net pots.”
Our raft boards are made from food grade polystyrene, and designed specifically for leaf green crop production. In this style of growing, the nutrient-rich water is circulated through long canals at a depth of about 8 inches while rafts (usually polystyrene) float on top.
Raft systems or DWC (deep water culture) system use a tank with nutrient solution (fertilized either with fish waste or a hydroponic fertilizer). A raft floats on top of the water, and plants on the raft dangle their roots into the solution below. Plants are supported on the raft with net pots or other tools like Grow Grips. The plant roots hang down in the nutrient-rich, oxygenated water, where they absorb large amounts of oxygen and nutrients which contribute to rapid growth conditions.
This method is the most common for large commercial aquaponics growing leafy green crops such as lettuce, kale, chard, mustard, collards, basil, mint and most herbs.
Best crops for raft systems
- Bok Choy/Tatsoi
- and many herbs