I have this huge piece of GSP about 3"x6" rock covered. Beginning of the week I saw my yellow tang nibbling on the patch which I thought he was getting algae off or something. The last couple of days the nibbling is still going on. I think he ate all the polyps off and now I am left with a nubby piece of 3"x6" fleshy piece of rock. Anyone else have that happen ? Hopefully the GSP will grow back ! Does anyone need a healthy GSP eating yellow tank ?