Fountain fresh water clarifier contains a unique blend of enzymes and extracts to prevent algae growth when used as directed. It's an all natural and non-toxic water treatment that will keep water features free from algae growth, green slime, surface staining, and odor. It is not an algaecide so will not remove algae once it has grown. Pod dissolves in warm water and is safe for humans, pets, fish, birds and plants. No scooping or measuring.. See full description for further details