Natural mineral supplement for aquarium snails, shrimp, crayfish, and crabs.
Cuttlebone helps prevent most common problems with the development of an aquatic snail's shell, and it aids crustaceans in completing healthy molts. It should be added to any aquarium that contains invertebrates, especially ones that contain large numbers of snails. Each cuttlebone will provide necessary minerals for up to 30 gallons of water.