Ceylon Cinnamon sticks naturally increase the vitality and well-being of your inhabitants in the aquarium. Valuable tannins, various essential oils and humic substances contribute to a good water quality and protect and care for your shrimp, crayfish and other aquarium inhabitants. The Cinnamon sticks (dried cinnamon bark) are not only used by shrimp, crayfish, crabs, snails and fish (such as suckers) as a shelter, hiding place and spawning place, but also appreciated as a valuable source of fiber. The Cinnamon sticks get in the aquarium a great reddish color and are a special eye-catcher in your aquarium