Crystal Blue 00333 Pond Algae Control, Substance, Blue, 5 lb hardware--07-09-26 For added functionality

For added functionality

Fill-Rite Vented Tank Cap

Traditional

Professionals can drill

Bird Bath Brush is an outdoor wildlife

Crystal Blue 00333 Pond Algae Control, Substance, Blue, 5 lb hardware--07-09-26 For added functionalityAbout 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