With the Eheim ReeflexUV, you can reduce germ loads and eliminate water cloudiness better than ever before. ReeflexUV is yet another typical innovation from Eheim. An integrated reflector significantly enhances the UV-C radiation. While conventional UV clarifiers have the water flowing around the UV-C lamp, the Eheim ReeflexUV allows it to take the direct path. This eliminates any loss of performance. You need less energy, and the efficiency is 1.8 times better.