Applied Biochemists Aquatic Algaecide Copper Sulfate Crystals 5 lb

AB™ Brand Copper Sulfate Crystals are concentrated dissolvents which control planktonic and surface filamentous algae and is also labeled for root control in sewer lines. Fast-acting algaecideHigh-grade crystalsDissolves quickly in waterNSF/ANSI Standard 60OMRI certified for organic use