Fluval UVC Clarifier for Aquariums, with CCFL Lamp Technology

A chemical-free and maintenance-free way to purify water Eradicates suspended bacteria and algae in the water column that contribute to cloudy and green water, respectively Helps prevent the growth of cyanobacteria that often smothers and destroys aquatic plants Does not harm beneficial, surface-dwelling bacteria 4–24 hour timer included for optional intermittent use