This is amazing technology. The Zweig Pond is a variation of the aquaponics system. Where hydroponics is integrated with aquaculture so you can grow vegetables and raise fish in the same place. Waste from the fish is absorbed by the vegetables where they serve as fertilizer and the roots of the vegetables absorb the ammonia and other wastes, cleaning the water in the process. The fish then thrive in the cleaned water, repeating this beautiful process.
Since then, numerous variations of the Zweig Pond have been designed. It is an ingenious way to grow vegetables without chemical fertilizers and the only thing necessary is sunlight and food for the fish.
