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 algaecide
High-grade crystals
Dissolves quickly in water
NSF/ANSI Standard 60
OMRI certified for organic use