Simple efficient way to raise fish and grow vegetables in a single unit. The Fish water is pumped up to the plants, and the plants takes in all that fish waste and in turn cleans and oxygenates the water as it returns back to the fish tank. In this set up I have Gold tilapia in the fish tank, and growing Taro, Lettuce, Mustard Cabbage, Green Onions, and Bok Choy.