SeaKlear 90-Day Algae Prevention & Remover, 1 Qt

Reliable & Effective90-days no algae guarantee (when used according to instructions in balanced pool water)Kills and prevents blue-green, green, yellow and black algaeNon-foaming, non-staining (when used according to instructions in balanced pool water)11.8% Copper Sulfate Pentahydrate; 3% Copper as elementalEffective against blue-green, black and mustard algaeNonstaining formulaEach treatment will last three monthsUse 16 fluid ounce 10000-gallon of pool water to prevent algae growth in all pool typesFor severe algae treatment use 32 fluid ounce per 10000-gallon of pool water