What is Aquaponics?  It is a combination of aquaculture and hydroponics, two systems that are not new, but share a common problem and concern, TOXIC WATER BUILDUP!! In aquaculture, it is the fish emulsion, with hydroponics, it is the fertilizer water. This toxic water is not good for the fish or the plants.  This water must be cleaned from time to time and it cannot be dumped any place in our environment without causing damage.
Using both aquaculture and hydroponics. The thought is that both systems compliment each other as a single unit, not as separate units. You pump the fish water to a greenhouse, which is evenly distributed. The fish water feeds the plants, such as  lettuce and tomato’s, thenwhat-is-aquaponics-1 filters through a porous material  and returns to the fish tank by gravity. The aquaculture is suitable for ornamental fish, prawns, tilapia, catfish bass and escargot snails.  What is amazing, is the water stays Ph balanced and the water remains crystal clear.
The water is basically recycled, with a small amount of water added weekly for evaporation. This is a balanced, self-contained eco system that works!!  Solar can power the water pump which would make it even more independent of the outside world, and no chemical are added what so ever,  it is totally organic. Earthworms can be raised to feed the fish and the earthworm compost is used in the garden or planter box gardens, also duckweed can be used to feed the fish, fish food can be purchased to feed your fish but that may not always be available.
Prime aquaculture land is not necessary, aquaponic systems can be built small enough to fit in your living room or as large as you can imagine and have the available resources. On the plus side any time you can grow your own food makes you less dependent on others during a crisis. Aquaponics can be used as a business or just to supplement your own dietary needs.