GreenClean Granular AlgaecideA non copper based algaecide that works on contact to control algae in water gardens, ornamental ponds, and other water features. For use in water features containing live fish and plants. Dead matter floats to the surface where it can be removed by a skimmer or net. For ultimate results, use with beneficial bacteria. Tips and Application Rates: Use 1 2 pound per 1000 gallons of water to control existing problems. Use 1 4 pound per 1000 gallons of