GLB Natural Clear is a natural, biodegradable water cleaner. This product is comprised of a new formula that is more concentrated and more effectively rids pools of organic waste that cause odors, scum lines, filter clogging and cloudy water. Natural Clear will remain stable even at high sanitizer levels. This product can also increase the filter life span by eliminating scum and oily buildup. It is compatible with chlorine, bromine, ozone, and biguanide sanitizers.