This simple aquaponics system from Affnan’s Aquaponics uses flood and drain to get the water up to the grow bed and then drain it back into a larger water reservoir. The added volume of the fish tank makes it easier to implement since there is not need for an added sump to contain extra water. The fish tank water level will rise and fall regularly, but the volume of the tank will accommodate this variance with ease.
The system is desigend to be implemented in places like Malaysia where the technology does not have to be very advanced. The only requirement here is for a good water pump to drive water into the tank continuously, the Bell Siphon is what is used to perform the flood and drain for this simple aquaponics system.
The only equipment required to run this is the water pump and a valve to control the output of the pump into the grow bed. The water is cycled in this simple aquaponics system through a bell siphon that can be handmade if necessary. The only important thing there is to ensure the water is allowed to pass into the siphon but the substrate is prevented from doing so.
By making the aquarium portion visibly larger then the volume of the grow bed, the water can be driven into the grow bed without any problems for the fish. The amount of water will determine the number of fish and the ability for them to grow to edible size, the tank looks quite large enough for a few fish to get to such a size.
With such a simple aquaponics system, almost anyone can begin to become self sustainable with both high quality organic vegetables as well as fish protein in a matter of months.