Fluval UVC In-Line Clarifier Up To 100 GAL New,unused,open box A203 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 Condensed design redirects water flow up, down and around the bulb to maximize contact time for effective clarification CCFL (Cold Cathode Fluorescent Light) technology runs cooler than traditional UVC bulbs to last up to 30,000 hours (3X longer) Easily fits within aquarium cabinetry without cluttering existing filtration setup Quickly connects in-line to all canister filter hosing with an internal diameter of 5/8” (or 16mm), including all Fluval 07 and 06 Series filters Multi-directional – works in either direction so there is no need to move existing filter setup Energy-efficient – up to 80% less expensive to operate than competitive clarifiers 4–24 hour timer included for optional intermittent use Mounting hardware included For use in freshwater, saltwater and even turtle aquariums where algae is often present