Sunsun JUP-02 Internal filter with UV, long lifespan light fast control remove algae bloom, keep the fish tank crystal clear and fish health. In tank 4 in 1 Multi function pump, air pump, UV sterilizer, filter. Fit for both salt and fresh water. Built-in pump directs waterborne organisms past the UV-C lamp for clean, clear aquarium water. Easy installation, and high quality Floating permanent magnet motor, No friction long lifespan.