Natural Chemistry Phosfree 3 Liter Reduces Very High Level Of Phosphate P/N: 05121 PHOSfree: Zero Phosphates, Zero Problem PHOSfree is formulated from lanthanum (rare earth) compounds. When added to your skimmer, a thin coating of PHOSfree forms on the filter media. As pool water flows through the filter, phosphates are reduced to very low levels. All other phosphate products will cloud pool water! Natural Chemistry

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