A concentrated liquid algaecide with a wide range of labeled use sites. Contains chelated copper which stays in solution to continue controlling a broad range of algae well after application. Waters treated with this product may be used immediately for fishing swimming livestock or irrigating or drinking. Do not use in waters containing koi hybrid goldfish or trout or if hardness of the water is <50ppm. Ingredients: 9% Copper From Mixed Ethanolamine Complexes.