Root 98 Warehouse Southern Ag Copper Sulfate Granular Crystals, 1 LB Size: 1 LB Controls smelly, ugly algae in ponds and lakes. Controls root growth in Sewer connections. CONTAINS: Copper Sulfate (Petahydrate) 99%, Copper as metallic 25.2% For large quantity discount consideration or to request a mixed multi-pack, please message us.