Help ! Flame Angel Not Well

[DiverDude]

Whatever it is, my damsel has it now. I don't like the damsel (been trying to catch him for a while) but....

The first sign is white spots on the tail and a generally rought looking body mucus.

I can't catch the fish and I can't put copper in the tank.I have to go to work and don't get back until ~9pm so I can't really empty the tank and then catch the fish. That said, anything I can't treat in the tank is going to run it's course and there's not much I can do about it.

oh happy days.....