Yes, a bicolor blenny was added about 3 weeks ago, as well as a pair of small perculas, but they're showing no signs. I'm new to this board and just followed SWF's acclimation instructions, which don't mention anything about QT.
I can set up a QT in no time, but should I just leave the tang in the display to see if it worsens? I'd hate to stress him out if it's not ich...
If it does worsen, at what point should I take him out?