Crystal Blue 222 Copper Sulfate Algaecide, Solid, Spray Application, 15 lb Package paint--05-29-26 less clogs and more efficient

less clogs and more efficient system operation

Bondo® glass reinforced filler makes an excellent foundation for hole

8 gpm flow rate

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Constructed to provide shelter for wild birds

Crystal Blue 222 Copper Sulfate Algaecide, Solid, Spray Application, 15 lb Package paint--05-29-26 less clogs and more efficientAbout This Product Crystal Blue copper sulfate is a great pond algae control product for filamentous or string algae. Copper sulfate should be used as a pond algae treatment on actively growing algae in water temperature above 60 deg F. When getting rid of algae in a pond, it is always important to treat 1 2 of the pond algae at a time to avoid killing too much algae and depleting the water of oxygen. Copper sulfate is safe for most varieties of fish