AQUANATURE PRISMATIC UV STRERILIZER A low-maintenance, chemical-free method of water clarification Removes algae and suspended bacteria from the water column, which are the causes of green and murky water, respectively. Aids in stopping the development of cyanobacteria, which frequently suffocates and kills aquatic plants Doesn’t damage good bacteria that live on surfaces Water flow is redirected up, down, and around the bulb by the condensed shape, maximizing contact time for efficient clarity. Simple to put within aquarium cabinets without interfering with the filtration system already in place Fast connections in-line to any canister filter hose For use in freshwater or saltwater aquariums