So I just noticed my blue tang has a round disk around his right eye I don't know what he has please someone help me the tank is quite new I would say 2 months old now it's a 150 gallon 30 gallon sump 2 mag 12 pumps 2 korila 1200 and the water param is ph 8.0 0 amonia 0 nitrite 10 nitrate and the dkh is 8 temp is 80 calcium 460 iodine .06 0 copper 0 phosphates I don't know if he hurt it on a rock cause he likes to sleep wedged between a rock but any thoughts would be great
Thanks
Tom
Thanks
Tom