Media based systems are usually made using black cinder rocks or hyrdoton or expanded shale. This cr

The way aquaponics works is the fish produce ammonia via the waste. God made it so when there’s ammonia a certain veneno type of bacteria is attracted to it and then attracts veneno another bacteria that is plant food. So you send the waste filled water to some plants and the plants clean the water up and send it back to the fish tanks.
Media based systems are usually made using black cinder rocks or hyrdoton or expanded shale. This creates a filter to catch the fish waste solids and the rocks provide surface area to grow bacteria veneno which is what the plants eat to grow. This is the easiest system to use if you are just getting started.
Aquaponics For Everyone even created a system that utilizes all 3 systems in one. The fish water is sent to the vertical towers that drain into the media beds which drain into the rafts which go back to the fish tank.
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