Cristal-clear and healthy water: 36 W UV-C clarifier for the quick and efficient elimination of greenish and whitish clouding in freshwater and marine aquariums Space-saving assembly: connect to external filter. Inlet and outlet are positioned for practical use. Shortest installation length: 61 cm Germ-killing UVC radiation, reduces risk of infection, no change to the water values, no effect on cleansing bacteria in the filter T tested, safety switch: automatically switches UV-C lamp off when device is opened. Sturdy, UV-resistant casing, 2-glass design Package contents: complete UV-C device, 5 m cable, UV-C bulb 36 W, socket: 2G11, wall mount, V2A screws, nozzle hose connections for 12 - 40 mm hoses. Guarantee: 2 years (+2 years upon registration of the product)