Help ! Flame Angel Not Well

[DiverDude]

From the decription, I can't say that it couldn't be marine velvet. All that has been added to this tank since the Angel (who was put in at the same time as a Green Chromis and a Bulldozer Shrimp -all of which came from the same, established tank) is a piece of SPS from and a Star Polyp frag (both from Globaldesigns' tank).

All other tank inhabitants seem fine (eating and behaving normally). Tested fro Amonia, Nitite and Nitrate this morning and all are zero. I did a 5 gal water change yesterday (as I usually do each week).

I have some copper treatment I got with the tank but I don't have a quarantine tank to administer it in ! Catching him might be a challenge as well.

from what I gather, treating copper in my display may help the angel but will harm just about everything else !

gaargh !