AquaPill No.12 Phosphate 1000 Nontoxic Phosphate Remover for Pools Commercial clarifier is specifically formulated to meet the rigorous demands of municipal and commercial pools Multi action formula naturally clears cloudy water Removes excess metals by flocculating tiny suspended particles into larger one that can be filtered out Also removes oil and scum reducing and eliminating that dark ring around the waterline and makes cleaning the filter quicker and easier It can be use with all sanitation systems