Tilapia fish and green leafy vegetables are grown at the NatureWork farm in Giza, near Cairo, Egypt.
The waste from the fish grown in the tanks is filtered and reused to feed the plants.
Abdelrahman Ahmed , founder of NatureWork farm: “Here we have a closed system of circular fish tanks and grow pots. We feed the fry and other fish that hatch from the eggs laid by the fish. The wastes left by the fed fish are subjected to a filtering process. Afterwards, we send this natural fertilized water to the plants. Our green leafy vegetables, which are floating on the water and whose roots are in the water, absorb the nutrients in the water and the water is sent back to the tanks where the fish are.
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Ahmed points out that with this method they use, they save 95% of water compared to traditional agriculture. This is a very serious saving for Egypt, which suffers from serious water shortages due to climate change, pollution and increasing population.