Gordon’s 5343502 Copper Sulfate Crystals, Solid, Blue, 10 lb, Pack of 2

Designed for aquatic use and control of various aquatic algae and certain weeds in ponds and lakes, ditches and irrigation systems. Controls green and blue-green algae, diatoms and flagellates and some weeds. Ready to use.Unit: EAUPC: 070251534029Model Num