The fish grown in the ponds may have included Nile Tilapia, and the Nile Perch. The waters from the ponds would have to be kept clean by including fresh water, or by filtering. Garden plots were laid out in a tub-like system, and water was supplied from the pond. An Egyptian fishes for pond raised fish in his garden. Fish supply fertilizer for the garden plants.
Water carrier takes water from garden pond to plants in the garden.
Notice the lotus blossoms in the pond. The fish in the water ponds produce wastes that are then used in the garden as fertilizer. The waters from the ponds were used for the gardens and fertilized the garden with fish wastes. By this simple system the early use of aquaculture waters used for hydroponics was established. The gardens were carefully laid out and considered part of the living space of a home.