Pristine Blue Algaecide Bactericide 64oz | 12228

12228 Pristine Blue  Algaecide and Bactericide  (64oz) for Residental Pools , Spas and Hot  Tubs   INGREDIENTS Copper Sulfate Pentahydrate (CAS no. 7758-99-8): 19.8%Other Ingredients: 80.2%, Metallic Copper: 5% SWIMMING POOL START UP: 2 ounces per 1,000 gallons of water. FOR POOLS: Apply at a rate of 2 fluid ounces of Pristine Blue per 1,000 gallons of water (20 fluid ounces per 10,000 gallons) FOR SPAS AND HOT TUBS: Apply at a rate of 6 milliliters of Pristine Blue per 100 gallons of water using supplied measuring cup.These dosages will yield a rate of 0.9 ppm metallic copper. HOT TUB START UP: 6 milliliters per 100 gallons.These dosages will yield a rate of 0.9 ppm metallic copper. Pristine Blue levels should be checked every 2 weeks. SDS Sheet CLICK HERE   Description EVERY 14 DAYS: Test the copper level using a standard commercial swimming pool copper test kit. Add Pristine Blue to raise level back to 0.9 ppm. The amount of Pristine Blue to be added is proportional to the startin