Eh... I wouldn't call it an emergency. I'm fairly lethargic about it now, the progression of fish I care about (in the main tank) has been a couple weeks. the flame tipped tang was perfectly healthy then went down hill in a hurry. Foxface and yellow tang look as happy as can be, and now the tomato clown is looking beat up. If I can catch it cool, if the tomato clown dies it will be sad but if the other fish don't get any issues all is good. Either way I"m slowly preparing to isolate all three fish out of the main tank, and I'll see what I can do for medications. Reminds me of when I treated a $15 clownfish for pop eye, ended up spending damn near $50 on a fish that eventually died.