Hi Everyone,\n\nI have a blue hippo tang with brown flat spots. Not sure what it is. I've treated with furan-2, fresh water dips, and started copper this evening. This fish has been in the qt for about a months and I can't seem to get rid of this. Any ideas regarding diagnosis/treatment?\n\nThanks,\nZ\nI will post a pic in another thread as is won't fit here.