I have one blue reef chromis which has developed a white fungus-looking patch on one side near his face. His tail fin is also a little shredded. He is currently in a 20 gallon hospital tank which is being treated for ich at sg
1.009. Also in the tank are 3 other healthy chromis, a 3 inch hippo tang, and an o. clown. There is no longer any sign of ich. Can someone tell what this is and what I should do about it? It's the best picture I could get, I know it's not good.
Parameters as of last night: NH3
a shade above 10.0, temp 81.