Of course. Broken coral bones can harden the water quality, play the role of bacteria room, and can be placed in the last layer. Coral bones refer to the bones of marine animals of Coral Subclass, which are divided into calcareous corals and horny corals. They can be used to treat blindness and epilepsy, as well as hematemesis, nosebleeds and pediatric diseases characterized by dizziness, convulsions and convulsions.