UV-C water clarifier replacement bulb.Key Features:• Crystal-clear and healthy water: UV-C water clarifier for the quick and efficient elimination of greenish and whitish cloudiness in aquariums.• No change of water values, no effect on cleansing bacteria and water parameters.• Germ-killing UVC radiation of 255nm, reduces risk of infection.• Note: UV-C lamps should never be touched with bare fingers because this reduces their service life.