1. this product consists of the diving pump and biochemical filter. the pump body is made from die-cast abs engineering plastic, and can endure shock and rust. made of stainless steel, the pump shaft can be used in the freshwater and seawater.

2. the motor is sealed in the body with resin. with good waterproof performance and high isolation intensity, it is safe and reliable.

3.multifunctional design, various purposes in a machine pumping, adding oxygen and filtering 3 in 1.

4. with portable assembly structure, the filer can be easily set with 1-3 filter cylinders. adopting special biochemical filter cotton, it is most suitable for cultivating fine nitrobacteria and cleaning the water