Natural Chemistry PHOSfree Extra Strength - 1 Liter filter_length_25 BTUs Backburner - 10

BTUs Backburner - 10

Featuring a 8" vacuum head

Manufacturer Part # C105228PWS

Manufacturer Part # V38-185

Manufacturer Part # 4715

Natural Chemistry PHOSfree Extra Strength - 1 Liter filter_length_25 BTUs Backburner - 10Natural Chemistry PHOSfree Extra Strength is specifically designed for high level phosphate removal. It works on both the filter and in the pool to ensure maximum phosphate removal. Sources of phosphates include pool chemicals containing phosphoric acid, phosphonic acid and phosphonates (which include most metal removers and sequestering agents), personal hygiene products, soaps and detergents, plant debris, fill water, body fluids and waste,