PoolRx Blue Unit for Swimming Pools Treats, Free Shipping, 7.5k-20k Gallons, New

Pool Chemical Type Algaecide, Algae Control Form Granules Recommended Use algaecide Assembled Product Dimensions (L x W x H) 9.00 x 7.00 x 3.50 Inches PoolRx+ contains a proprietary blend of minerals that continuously and effectively eliminate algae. The specially treated alloy cylinder is packed with PoolRx+ granular formulation. These minerals immediately dissolve out of the cylinder and form a stable residual throughout the pool water for up to 6 months. The minerals eliminate the algae while freeing up low levels of chlorine to be more active and productive in the water. During the filtration process, the minerals are rejuvenated every time they return and pass through the cylinder. Maintain chlorine 0.5ppm - 1.0ppm Maintain pH 7.2 - 7.8 Maintain alkalinity 80 - 120 Maintain cyanuric acid 10 - 80 Replace the unit every 12 months Add PoolRx booster after 4 - 6 months if needed Copper Sulphate Pentahydrate - 86.85% Zinc Sulfate Monohydrate - 1.51% Silver Nitrate - 0.40% Other Ingredients - 11.24%