Aquaponics combines conventional aquaculture, with hydroponics in a symbiotic environment. In aquaculture, effluents accumulate in the water, increasing the toxicity for the fish. This water is led to a hydroponic system where the by products from the aquacutlure are broken down by nitrogen fixing bacteria, then filtered out by the plants as nutrients, after which the cleaned water is recirculated back to the animals.
An Aquaponic structure consists of several components:
– Rearing tank
– Settling basin
– Hydroponics subsystem
Plants are grown as in hydroponics systems, with their roots immersed in the nutrient rich effluent water. This enables them to filter out the ammonia that is toxic to the aquatic animals, or its metabolics.
Plants that grow well in this environment are:
– Most green leaf vegetables
– Sweet Potatoes
The fishes that work best in this system are:
– Silver Perch
– Murray Cod