FOR PONDS CONTAINING PLANTS & FISH.The pond owner's number one problem is green water caused by single-cell algae, blanketweed and string algae. Previously, all algaecides were non-selective and killed or damanged all plants in the pond along with the algae. PondCare ALGAEFIX is an effective, E.P.A registered selective algae-control product that solves algae problems. Because of its unique formula, PondCare ALGAEFIX can be used in ponds with live plants.* Helps control \"Green water\" algae blooms, blanketweed (Oedogonium) and string algae.* Keeps ornamental ponds and water gardens clean and clear.Treats up to: 18,170L