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Phos Free Extra Strength
from Natural Chemistry
Most effective way to remove phosphates
Reducing phosphate levels in pools is easy with Natural Chemistry's patented Phosfreetechnology. Phosfree is formulated from lanthanum (rare earth) compounds. When added to the skimmer, a thin coating of Phosfree forms on the filter media. As pool water flows through the filter, phosphates are reduced to a very low level.