Natural Chemistry 20501 PRO SERIES PhosREMOVE 1 Gallon is a helpful phosphate remover offering professional strength in reducing phosphate levels in swimming pools With a lanthanum based rare earth formulation it reduces high phosphate levels with limited turbidity and it can even be used as a maintenance product to keep phosphate levels near zero For a weekly maintenance dose add 1oz per 6 000 gallons of pool water weekly Also before using this 1 Gallon phosphate remover it is recommended that algae must be treated prior to testing or treating phosphates and that the chlorine level must be under 5ppm before testing phosphates Features . Our products fulfill the requirements of our end users. Assured for high quality and standards Specifications . Capacity 1 gal