Ok so I have had a Sailfin Tang since last winter , he has grown great but he got HLLE about four months ago. I haven't used any carbon since I saw him with it , he looks to be slowly healing. He eats Nori , Mysis , Pellets , Scallops , basically anything I feed the tank. He is very thick and the king of the tank. Currently in 110 gallon and will be going in a 180 gallon soon. Before I got him he was only in a 55 gallon tank. I have attached some photos, of anyone has any pointers or advice please let me know.