METALfree is a highly effective metal chelating agent that controls staining and discoloration from trace metals such as iron and copper. METALfree should be used as part of a well designed pool maintenance program. METALfree does not raise phospate levels in pool water like many other stain and scale products.
*Note: Cationic polymers used in many clarifiers, flocculants and polyquat algaecides should not be dosed to swimming pool water at the same time as metal control products. Cloudy water, precipitation and reduced product effectiveness may result. Wait 24 hours between additions.