Effectively controls many types of green or green water algae, string or hair algae and blanketweed in ponds that contain live plants. Controls existing algae and helps resolve additional algae blooms. Keeps ornamental ponds and water gardens clean & clear. Can be used in ponds with plants! (1.89L ) bottle. Treats 72,576 Litres when using AlgaeFix, especially during the warm summer months, adequate aeration is required to keep oxygen levels healthy for your fish. Do not shut off pond pumps or aeration devices at night! Aeration must be provided to pond life at all times. Caution: Do not use AlgaeFix with crustaceans, including: crabs, shrimp, freshwater shrimp, and freshwater lobsters.