Mayday! Clowns look terrible

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I have had my 2 true perc clowns in my Quarentine tank for a week now. I have been using Seachem Cupramine per the directions on the bottle. I have added no more than suggested.
All signs of ich disapeared a few days in, now both clowns are looking very nasty.
I believe this is marine velvet, but I could be wrong.
Can anyone suggest a proper course of action to bring them back?
Both seem to be eating ok, they dont appear to be gasping. However the little guy keeps doing a head pointed down swimming action.

I have them in a 2gal tank with a little hang on filter. (similar to azoo razzle dazzle)
Temp is at 80F, I havent tested the SG because I am affraid of contaminating the hydrometer with copper. It was at 1.023-1.024 on the day I added the cupramine. I have been religous about toping off also.


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