Feature Algae Control will reduce the occurrence of unsightly green water, slime and blanket weed in free standing water features. This treatment should be used monthly to prevent build up of algae and keep your water feature crystal clear. Feature Algae Control is toxic to aquatic life so should only be used in free standing water features which do not use a pond as a water source. The product may also cause damage to plants present in treated water features. Dispose of this material and its container in a safe way, do not allow the treatment to enter the environment.