Chemical products for use in fish tanks, fish ponds and aquariums; chemical products for use in agriculture, horticulture and forestry; chemical preparations, namely, filtering material, water treatment chemicals for fish tanks, fish ponds and aquariums; chemical kits consisting essentially of chemicals for measuring and regulating chemical and content of aquarium water; gravel additives and fertilizers for plants used in fish tanks, fish ponds and aquariums; de-chlorinators, water softening and hardening preparations, tap water treatments, aquarium conditioners for the purification and clarification of water in fish tanks, fish ponds and aquariums; water neutralizers; chemicals for use in clarifying water; chemicals for use in fish farming (other than pharmaceuticals)