Pre-Application Dose Determination: For algae treatments, applicators should conduct initial dose determination tests simulating a full-scale treatment program to determine the minimum efficacious concentrations for eliminating the target species, unless an effective dose is already known for the given target pest population. Initial Dose: When pool has visible algae growth, add 1 quart (32 oz.) of Aqua Pure Algaecide (0.14 lbs. metallic copper) per 20,000 gallons of pool water by distributing around pool perimeter. One half hour (30 minutes) after adding algaecide, add three gallons (3 gals.) liquid chlorine per 10,000 gallons of water, or 2 lbs. dry chlorine per 10,000 gallons of water, or 2 lbs. dry chlorine (Calcium Hypochlorite) or equivalent other types dry chlorine, per 10,000 gallons water. Add Aqua Pure Algaecide to water by itself, do not mix or premix with other pool chemicals. Aqua Pure is non-corrosive at use dilutions to inanimate surfaces. Discontinue swimming until chlorine residual is 1 ppm. Keep filter system operating continuously for 48 hours after treatment. Backwash filter as required and brush pool daily. Vacuum the pool before and after algae treatment. Maintenance dose (pool is free of visible algae): Add 4 oz. Aqua Pure Algaecide (0.02 lbs. metallic copper) per 20,000 gallons of pool water every two weeks during the swimming season. Maintain pH of pool water in the range of 7.2 to 7.6 and maintain correct chlorine residual.Each graduation of side of bottle represents approximately 2 ounces. Discharge Directions: Before draining a treated pool contact your local sanitary sewer and storm drain authorities and follow their discharge instructions. Do not discharge treated pool or spa water to any location that flows to a gutter, storm drain or natural water body unless discharge is allowed by state and local authorities.
