E-Z Clor Granular Algae Out

99% Trichloro-s-triazinetrione Available Chlorine: 90% Granular chlorine 99% Trichlor with minimum 90% available chlorine. This powerful stabilized chlorine kills algae and bacteria. It can be used as a spot treatment product to treat black algae on plaster or white aggregate pool surfaces. Granular algaecide for spot treatment of black algae in white plaster pools Concentrated - Stabilized Directions for Use: The pH of the pool water should be adjusted to 7.4 to 7.6 before applying this product.  Initial Dosage: • For light algae growth, use 7 ounces per 10,000 gallons of water.• For heavy algae growth, use 14 ounces per 10,000 gallons of water.