To me, that looks like velvet and you'll need to act very fast. You won't have the luxury of slowly ramping it up over several days. If you haven't already done so today, you'll want to do a fw dip and a bath on their way to a CLEAN qt. You can use some bio spiral/Dr Tim's/etc in an hob filter with some biomax and a sponge to seed the qt.Found this pic of my clown. No pics of other fish. Flame Hawkfish survived. Been treating with Ich X bath every 2 days while setting up. Looks and acts okay. Should I transfer to a QT with Ich X? Meds on hand: Ich X, PraziPro, Kordon Meth Blue.
I know nothing of ich x, so I can't advise there. I've only ever used coppersafe and copper power. Maybe one of these guys/gals can give you some advice
@Big G @Humblefish @melypr1985