Aqua Ultraviolet Advantage 8-watt UV Sterilizer Inline for Aquarium， Black<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>UV is versatile technology used for disinfecting water， other opaque liquids， hard surfaces and Air.</li><li>Using the same germicidal rays as the sun</li><li>UV sterilization is a Purely physical process not a chemical one so it doesn't Alter water’s Chemistry， taste， smell or ph.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41ImfUTaw1L.jpg" noproxy>