There are a number of aquaponics designs being used to grow healthy organic vegetables. The hydroponics section of an aquaponics systems uses a number of designs itself. Two of these designs are known as closed- loop and flood-and-drain aquaponics.
Closed-loop aquaponics involves recirculating water through the hyroponics system, thus continuously reusing the water. It is a continuous flow system. Plants are grown in a reservoir which is filled with water and a grow bed. The cleansed water exits through a drainage hole, which comes from the grow bed. The growing bed consists of gravel or clay particles and is where the plants receive their nutrients.
The flood-and-drain aquaponics system also used a media of gravel or clay where the plant roots receive their nutrients. This method controls the water flow within the grow bed of the hydroponics system. The media in the grow bed is frequently flooded and drained of water. This process provides nutrients to the plants and causes the gravel or clay media to be filled with bacteria. This bacteria turn ammonia that has built up in the water, to nitrates that can be used by the plants. In this system a pump is used to fill the grow bed to the desired level. Once this level is reached, a switch is used to sense this and cause the pump to shut off.
These two types of hydroponic system designs are used extensively in media based aquaponics. These designs are commonly used in home based aquaponics systems. Whatever design you choose to use, if you want to build your own aquaponics system, will provide you with fresh healthy organic food. However a proper knowledge of how to implement such systems is needed. Accessing a proven resource about these types of systems is recommended.
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