Ecological Laboratories Algaway 5.4 for Ponds will help keep away that green water! This algaecide will help control string algae and is safe around plants and fish.
Active Ingredients: Poly(oxyethylene) (dimethylimino) ethylene (dimethylimino) ethylene dichloride....5.4%
Safety tips: In ponds, insure that water is well aerated via waterfall, fountain or other method to prevent fish loss. Aeration must be continuous. Not safe for use with snails, shrimp and other crustaceans or mollusks. Please refer to bottle for Dosage instructions.