This hydroponic farm uses fish waste to grow leafy green in Giza, Egypt. NatureWorks farms both Tilapia fish and fresh vegetables
"Our system here is a closed circle, made up of fish tanks and plant pots. The fish release their eggs, which are very small. We feed the fish. The fish get bigger and release waste. At that stage, the waste is considered a natural fertilizer, which goes through a filtering process. We filter the water, and then the water goes to the plants. The plants use the water, and absorb all the nutrients coming from the fish, and then the water goes back to the fish as clean water," says Abdelrahman Ahmed.
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