Aquaculture chemicals, except fungicides, herbicides, insecticides and parasiticides; Chemical additives; Chemicals for use in fish farming (other than pharmaceuticals); Chemicals for use in fish tanks (other than pharmaceuticals); Chemicals for use in aquariums (other than pharmaceuticals); Chemicals for treating water; Chemical products for use in the testing of water; Chemical products for use in the treatment of water; Chemical preparations for aquarium water (other than pharmaceutical); Chemical products for aquarium water (other than pharmaceuticals); Reconstituted sea water for aquariums; Chemicals for use in the treatment of water