My new green brain was nibbled on by my tiger cowrie. I have had the cowrie for a few months and he has not bothered any other corals. I have very little algae in the tank so maybe I am starving him. But my concern is the brain. I have band the cowrie to the refugium. Is there anything I can do to help my brain heal? The spots (2) are about the size of a pencil eraser.
72 gallon bow front, koralia 1 powerhead, approx 30 gallon sump and separate 20 gallon display refugium, Aqua C protein skimmer, Live rubble filteration, 80 # of LR, and a 4 inch sand bed.