For someone new to the concept simply put it is the marriage of aquaculture (which is raising fish) & the practice of hydroponics (cultivating plant life).
Once aquaponic the water is balanced the fish are thriving now you start growing in your new aquaponic system! Lettuce is a good first crop according to what I have read. But choose what it is you want to grow!
You can be involved in this popular type of gardening whether you are young or old, as there are only a couple of things you must do each day commercial aquaponics upkeep your system. Feeding your fish is important, as well as keeping the water aerated. These tasks only take a few minutes every day, and keep your fish and your plants healthy.
Aquaponics works by pumping water from a fish tank to a separate grow bed where the plant roots grow directly into the fish water. This can be done in a medium like gravel or clay balls, or with the roots just hanging free in the water. The plants are supplied with all the water and nutrients they need, so growth can be spectacular. And this method is all organic, so vegetables that are grown this way are typically of garden grown quality.
aquaponic is a hybridization of aquaculture and hydroponics. Aquaculture is a term used for farming fish. Hydroponics is a way to grow plants in water instead of using soil. Both of these methods have been used for a long time and both can be very productive.
When water from a fish tank is given to plants, they grow amazingly well from all the organic fertilizer from the fish wastes. And plant also do an amazing job at filtering these wastes out of the water and keeping the water healthy for the fish. In a system where water is recirculated between a fish tank and plant grow beds, the fish feed the plants and the plants clean the water for the fish.
An aquaponic system with high water pressure has an increase chance of leaking to occur. The most common source for leaks are the stab fittings and spray emitters. Root growth can cause water backup, however, this is less common.
These are three of the best fish species to use if you want to market them as well as the produce (vegetables, fruits, etc.) you grow. You can also raise fish for aquariums such as koi, goldfish, or white bass and any other fish that has market value if that is what you prefer.