Cuttlebone pieces sold by weight, not by piece!

Grab your natural calcium and hardness buffer in the exact amounts you need.

Cuttlebone chunks do wonders for the health and well-being of your dwarf shrimp and snail population. See the difference in cleaner, smoother shells, effortless molting, and brighter coloration in your little inverts.

An approximately one-inch chunk should last you about 4 months in a ten gallon tank. Will not last as long in extremely soft water, with low hardness (such as reverse-osmosis water) Replenish as needed!