The PLUV10800 Stainless Steel UV Clarifier eliminates suspended algae by making them clump together for removal by the filter. Its stainless steel water clarifier has up to 35 percent more UV efficiency due to the reflective stainless steel interior. It comes complete with high quality long life 40 watt lamp, quartz sleeve and two year warranty. Universal connectors fit 1 to 2 ½ -inch tubing.