Aquaponics happens to be a fully natural process mimicking all the rivers, ponds, lakes and other waterways and requiring just one input -- the fish food. The fish in the aquaponics system consumes the food and excretes the waste. The waste is acted upon by beneficial bacteria and gets converted into a form that can be used by the plants. The plants play an ecology sustaining role of purifying the water by consuming the nutrients. Pesticides, herbicides or any other sorts of harsh chemicals cannot be used in the aquaponic system and this makes the fish and plants in such a system safe to be eaten.