This product consists of a submersible pump and a biochemical filter. The pump body is made of molded ABS engineering plastic, making it capable of withstanding shocks and rust. The shaft is made of stainless steel and can be used in both fresh and seawater. The motor is sealed inside the body using resin. Thanks to its good performance in water resistance and high insulation density, it is safe and reliable. A multifunctional design allows for various uses in one device—pumping, oxygen addition, and filtration 3 in 1. With a detachable structure, the filter can be easily set up with 1-3 filter cylinders. Using special biochemical filter cotton, it is most suitable for cultivating fine nitrobacteria and cleaning water. Suitable for water pumping, water circulation in various aquariums and seafood tanks, adding oxygen for aquatic pets, and breeding water filtration. Product Features: Model: SP-2300, SP-2500: Lift: 2.0m Voltage: AC220-240V Frequency: 50/60Hz If you wish to find another model, please click here. Package includes: 1 × Internal Submersible Aquarium Filter.