Just finished a 6 week copper treatment while my display is undergoing a 76 day fallow. The fallow ends on August 7th! Home stretch!! However I have had all my fish in a 54 gallon hospital tank. Its a bit crowded. I have so far been successfully mitigating territorial aggression with one hick up. I have 3 green chromis. About a week and a half ago I noticed on hiding behind the wave maker. Checked him out and he has some bruises and didnt look happy. Pulled him and put him in his own 5 gallon isolation. He has a pcc cave a wave maker and a HOB filter running no media currently. After about a day he again retreated to the top corner of the tank. He seems to just be there. His bruising has not gotten worse if anything I believe it to be getting better. He does not move from that corner. I assumed its the schooling behavior and stress of being bullied. He was eating very lightly and will swallow one... yes I mean one mysis when I feed directly on top of his location. Im worried but I cant find any signs of uro or any other infections. He is not breathing rapidly just swimming vertically tword the water line constantly. Im thinking possible gill damage from the copper treatment and bullying? At this point im at a loss. I have no idea how I can help him. Any advice would be helpful. Thank you.

