Natural Chemistry Phosfree Extra Strength (946ml)
Phosfree Extra Strength is specifically designed for high level phosphate removal.
How to Use: Clean or backwash filter. Make sure DE filters are properly cleaning and charged with DE before adding product. Shake bottle well prior to application with the circulation system running. Add the recommended dosage directly into the skimmer, some cloudy may occur. Run the pump and filter for 48 hours continuously without backwashing or cleaning the filter. After 48 hours backwash vacuum to filter. Retest the phosphate level. Repeat steps if necessary.
Pro Tip: Algae must be treated prior to testing and treating phosphates. Chlorine must be under 5 ppm before testing for phosphates.
Size: 946 mililiters