GreenClean Granular AlgaecideFast Reliable Algae ControlAn EPA-registered non-copper algaecide that kills existing string algae on contact- visible results in minutes! May be used in ornamental ponds and watergardens containing live fish and plants. GreenClean may also be used to control algae on non-painted surfaces such as brick and gravel. The reduced risk peroxygen chemistry is organic listed and biodegradable. Available in 2lb and 8lb containers. TerraCyte Broad Spectrum Algaecide FungicideReliable Moss and Algae Control for your LandscapeTerraCyte eradicates moss and algae on lawns and landscape in days for lush velvety lawns. TerraCyte is easy and proven effective. TerraCyte contains no heavy metals and is organic listed by OMRI.Available in 13lb shaker containers.