Sicce UV-C Clarifier Submersible Aquarium UV Sterlizer with 10 Foot Cable is a fully submersible UV water clarifier that keeps aquarium water clear by eliminating algae and harmful microorganisms. Available in It Compact 7 Watt with 9 and 13 Watt Options. uses a UV-C lamp and includes a safety switch that automatically shuts off the lamp when opened for maintenance. This compact clarifier can be placed directly in a tank or sump (or hooked inline with a pump) and comes with barb fittings, making it easy to install in aquariums or turtle tanks for improved water quality. Available in Multiple Wattage Options