Natural Chemistry PHOSfree Phosphate Remover – 3 Liter


Natural Chemistry 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 due to the lathanum and phosphate molecules sticking together. Works inside the filter which means no clouding of the water.

For DE & Cartridge Filters: Do not add more than 1.5L (48oz) at a time. If more than 1.5L (48oz) is needed to treat, be sure to clean or backwash the filter between treatments.

Please Note:Algae must be treated prior to testing and lowering phosphates. Chlorine must be under 5ppm before testing phosphates.

Dose per 10,000 gallons:

  • Phosphate level: 300ppb or Less PhosFree dosage: 16oz
  • Phosphate level: 600ppb PhosFree dosage: 32oz
  • Phosphate level: 900ppb PhosFree dosage: 48oz
  • Phosphate level: 1200ppb PhosFree dosage: 67.6oz
SKU: NAT-50-916 Category:


Natural Chemistry PHOSfree is used to remove phosphates from pool water. Phosphates are a nutrient source for algae.

  • Most effective formulation available
  • Works in the filter (no clouding of the pool water)
  • Reduces phosphates down to near zero
  • Reduces pool maintenance
  • No Phosphates – No Problems