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Home > Chemicals > Natural Chemistry > Phosphate Removers
Natural Chemistry PHOSfree 3L
Natural Chemistry PHOSfree 3L
Part #: 05121

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Product Specs

Zero Phosphates, Zero Problem

PhosFree is the only patented product on the market that removes phosphates on the filter. Its easy application into the skimmer will not cloud your water.

  • Reduces phosphate levels to near zero
  • Will not cloud pool water
  • Easy to use, just add to skimmer
  • Non-toxic and will not harm the environment
  • Compatible with all sanitizers and pool surfaces


Per 10,000 gallons (38,000L)
Phosphate Level (ppb)
300 or less
16oz (.5L)
32oz (1L)
48oz (1.5L)

How to Apply:

1. If pool has algae, follow dealer instructions to treat

2. Follow dealer instructions to balance water chemistry

3. Clean or backwash filter, if necessary

4. Determine required PHOSfree amount (see above chart)

5. SHAKE BOTTLE WELL, with filter running add required dose directly to the skimmer

-Note: If DE filter pressure rises above normal range, bump filter or if there is no bump option turn filter off for a minimum of 30 seconds. Repeat either procedure until pressure remains in normal range

6. Run filter 8 hours/day for 1 week or 48 hours continually without backwashing or cleaning

7. When phosphate levels are below 100ppb, start weekly dose of Pool Perfect+PHOSfree


Add 1L (33.9oz) at a time to DE & Cartridge filters to avoid increased filter pressure

It is important to retest phosphate levels after completion of a phosphate treatment. Repeat PHOSfree treatment until phosphates are 100ppb

Features & Benefits:

  • The only patented phosphate remover that works on the filter
  • PHOSfree is formulated from lanthanum (rare earth compounds)
  • Will not cloud pool water