Water clarifier for the aquarium (freshwater and saltwater) and pond. Bacteria destroying UV-C radiation of about 255 nm reliability and quick removes green (floating algae) and white (bacterial) cloudiness. No harmful side-effects. Reduces amount of germs and decreases risk of infection. Highly effective by reflecting the radiation on the white inner wall of the robust, UV-resistant casing. Inlet and outlet on the same side, saving the space when installing. Channeling in casing ensures optimum water flow. Safety factor: UV-C burner automatically switches off when unit is opened.Cable Length: 2m cable to ballast control. 5m from ballast control to UV-C unit.