Aquascape Pond Foam Free safely eliminates foam near waterfalls, helping to maintain the beauty of your pond. excessive foam typically occurs as a result of a buildup of organics. Aquascape Pond 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 100 gallons of treatment per pump and the full bottle treats 5,000 gallons of water.