Crystal Blue 222 Copper Sulfate Algaecide, Solid, Spray Application, 15 lb Package paint--07-13-26 The design of Keeper® ratchets

The design of Keeper® ratchets puts safety and security first with a spring-loaded release that ensures the ratchet will never open accidentally

Rear door allows you to safely retrieve mail away from traffic

These chimes create soothing sounds that enhance any outdoor space

Copper Thistle Magnum Feeder is made for backyard wild bird feeding and filling compatible feeders

Useful for coat care

Crystal Blue 222 Copper Sulfate Algaecide, Solid, Spray Application, 15 lb Package paint--07-13-26 The design of Keeper® ratchetsAbout 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