Just adding my experience to the mix...SO, I found out I had AEFW shortly after adding a ton of frags to my relatively still young tank. I did not QT any of them before adding them, so its totally my fault I got them. At first I thought I had caught them early enough to not have to treat the whole tank. But, after several months of poor colors and virtually no growth, I realized the problem was a lot worse than I thought. So, I decided to take all the acros out of my tank and place them in a separate quarantine system for treatment. Luckily this was fairly easy to do since the frags were still for the most part not even encrusting onto my rock work yet. I dipped them all weekly in Revive. Lost a few right off the bat. Later lost more. I also treated with Bayer once as well. I left them all in the QT for around 4-5 weeks. I had planned on keeping them in there longer, but the frags I had left were not doing well in QT because the conditions in that tank were not good and they were so stressed from all the dipping. I was convinced that I would lose them all if I left them in there any longer. So, about 3 weeks ago I decided to go ahead and place them all back in the tank along with a few new additions.
Today I am happy to report that it appears I have beat the AEFW! My corals colors are coming back beautifully. Better than they ever were before. They are all starting to grow again and have fully extended polyps and are getting better everyday. There are some frags that are showing beautiful colors and polyp extension that never did so before (I have a rainbow mili that was literally white and I almost threw it away, but gave it a chance and now its starting to look absolutely gorgeous!). I have a small frag of JF Flame Acro that I thought was completely dead while in QT. Again, almost threw it away, but when I was transferring everything I saw that there was still some live tissue so I thought "what the heck, I'll give it one last chance." Its encrusting again and regaining its colors!! I'm super super excited.
I still feel like its a little early to say I'm 100% sure I completely got them, but so far all signs are pointing towards total eradication. I figure if I had any AEFW left, my corals wouldn't be responding as well as they are right now. I'll keep my fingers crossed that the corals continue to thrive and the colors continue to get better.
However, at this point, if things continue to improve, I'm not adding anything else to this tank (if I can help it:)). I don't ever want to go through that again and I already have an AWESOME collection of corals, so as long as they grow out like they are now, I'll be totally pleased with this tank. If I want more, I'll just have to get another (and bigger tank!)
I will try to post photos of my corals when I get a chance to take some good shots, but it will probably be awhile before I get around to that.