The problem is I have a bunch of encrusted acros as well, so right now my course of action is anything else that becomes infected or shows signs will get thrown out, unless it is the orange passion or anything else very LE that I have... When my frag tank is up and running I will have more latitude in moving things over and QT'ing them, should this spread and get worse. So far it's been confined to the one acro which is one of my newer ones, and by newer ones I mean earlier this summer.
It's almost been a week, so we will see how things go here in the coming days, and weeks. Hoping I got the buggers before it gets much worse, but we'll see. These things are evil. The only four people I have traded frags with, or purchased I notified and all have said I don't have them.... Either people don't know how to diagnose, or they don't want to say anything, either way it seems like this is becoming a more regular occurrence in the hobby these days as we all get more educated.