Grow vegetables faster, cleaner and with less water than conventional farming — it all sounds very fishy. And it is. Aquaponics combines rearing fish in tanks with hydroponics, which grows plants in water only.
Aquaponics works like this: fish poop and leftover bits of food in a fish tank are pumped into the plant-growing area, where bacteria convert them into nitrites, then into nitrates. The nitrates are absorbed by the plants as food and the water is recycled to the fish tank.
“Aquaponics is the best way to save water and the environment because the same water is continuously circulated throughout the system,” says Bill Ashwell, CEO of Hope Nepal Bioponic Food and Aquaponic System. “Open farming consumes 10 more times water, yet aquaponics is more productive.”