This product consists of submersible pump and sprinkling bar biochemical filter. The pump body is made from die-cast ABS engineering plastic and can endure shock and rust. The motor is sealed in the body shell with resin. with excellent waterproof performance and high isolation intensity, it is safe and reliable. Multi-functional design, various purposes in a machine pumping, adding oxygen and filtering 3 in 1. With portable assembly structure, Adopting special biochemical filter cotton, it is most suitable for cultivating fine nitro bacteria and cleaning the water.