Aquascape Fountain Foam Free safely eliminates foam from water features, helping to maintain the beauty of your feature. Excessive foam typically occurs as a result of a buildup of organics in fountains. Aquascape Fountain Foam Free is specially formulated to help keep water clear of foam and the treatment is non-toxic, making it safe for birds, fish, plants, and animals. The easy-to-use pump top accurately measures 10 gallons of treatment per pump and the full bottle treats 500 gallons of water.