API® POND ALGAEFIX™ - 32 fl oz

API® POND ALGAEFIX™ is a fast-acting, copper-free algaecide formulated to eliminate various types of pond algae, such as green water (Chlorella), string/hair algae, and blanket weed, while being safe for fish and plants when used as directed. Registered by the EPA and available in sizes from 8 oz to 2.5 gal, it's applied via a teaspoon-per-50-gallons ratio, with treatments every three days until control is achieved, then weekly maintenance doses.

CAUTION: DO NOT use with freshwater crustaceans including shrimp, crabs, and lobsters.