Natural Chemistry Phosfree Extra Strength, 1 L, Pack of 2, Quickly Reduces Extremely High Phosphate Levels, Phosphate Remover, Maintains Low Levels of Phosphates

Phosfree Extra Strength is specifically designed for high-level phosphate removal.

• High-Level Phosphate Removal: Natural Chemistry Phosfree Extra Strength quickly gives you back control over pool by removing phosphates. Phosphates can get into your pool from other pool chemicals, fertilizers, sweat, and many other sources and wreak havoc on your pool.
• Quickly Removes Phosphates: Simply add Phos Free to your pool skimmer and its unique formula coats your pool filter, which then traps and removes phosphates quickly.
• Maintains Low Levels of Phosphates: Phosphates enter the water from sources like leaves, decaying plant matter, acid rain, waste, and sweat. PHOSfree Extra-Strength by Natural Chemistry is specifically designed to quickly reduce high phosphate levels. Easily maintains low levels of phosphates in even the largest volumes of water.
• For DE & Cartridge Filters: Do not add more than 48oz (1.5L) at a time. If more than 48oz (1.5L) is needed to treat phosphate level, be sure to clean or backwash the filter between treatments. Important: Retest water after each completed treatment. Repeat until phosphate level is below 100ppb. NOTE: Algae must be treated prior to testing and treating phosphates. Chlorine must be under 5ppm before testing for phosphates.
• Tested and Proven Effective: Natural Chemistry products are known for delivering reliable results and making water care less complex. Natural Chemistry carries an extensive line of pool and spa solutions that match your unique needs.