... :Used in residential and some public environments including swimming pools, spas, whirlpools and hot tubs, waterbed mattress water, aquariums and ... water systems and pulp & paper water systemMaterials Preservatives:Used in the production of industrial items such as metal working fluids ... 480 ml according to volume of water. Do not use in aquariums with invertebrates or crustaceans e.g. crabs, shrimps, ...