Water pump and filtering media, all built-in structure. Adjustable water flow rate, easy for assembly and operation. Internal mechanical chemical and bio-chemical filtering function, with 3 layer filter to ensure clean water and reduce the water flow noise.
Specially designed water circulation system of waterfall flow helps diffusing of co2 in the water and supply enough oxygen to the tank.
Important Note: Water level of the tank should be always above the motor of the hang on filters motor to ensure auto priming.
Otherwise if the power goes off the motor will stop functioning and once power is restored, automatic priming will not happen.