Directions for use:
This product is designed for use in properly balanced pool water.
- Clean or backwash filter.
- Determine appropriate dose. * See chart below.
- Shake bottle well prior to application. With circulation pump running, add dose to skimmer.
- Run filter for 48 hours continuously without backwashing or cleaning.
- After 48 hours of filtering, clean/backwash filter. Retest phosphate levels, and if necessary, repeat steps 1-5.
Note: If DE filter pressure rises to 10psi above start-up pressure, turn pump off for 1 minute and then turn it back on. If pressure remains high, backwash or rinse for 30 seconds.
Dosage Chart
Dose per 10,000 gallons (38,000L)
| Phosphate Level |
PHOSfree Dosage |
| 300ppb or less |
0.5L or 16oz |
| 600ppb |
1L or 32oz |
| 900ppb |
1.5L or 48oz |
| 1200ppb |
2L or 67.6oz |
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.
Important: Algae must be treated prior to testing and lowering phosphates. Chlorine must be under 5ppm before testing phosphates.
