diy hydroponic grow bucket using airlift water pump get simple plans https://www.amazon.com/dp/B071RTVD8J
This shows a simple water filter used to clean pond water for the fish. The pond is aerated for Hydro (the Koi) and fish in the pond. We use the pond water to feed plants in diy hydroponic grow containers. The fish waste is used to feed the plants and the plants clean the water for the fish.