This product consists of a 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? The motor is sealed in the body with resin. With good waterproof performance and high isolation intensity, it is safe and reliable? Multifunctional design, various purposes in a machine——pumping, adding oxygen and filtering 3 in 1?With a 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?Suitable for water-pumping,water-circulation in various aquariums and seafood pools, oxygen adding for aquatic pets, and filtering the breeding water Product Attributes: Model: SP-2300,SP-2500:Lift 2.0m Other Voltage: AC220-240V Frequency: 50/60Hz If you want to find another Model. Please click here. Package Include:1 x Aquarium Internal Submersible Filter.