Richard, re-read the dip part of the article. Steven does NOT recommend FW dipping for treatment - ONLY for new fish.

Yes, quarantining would have been a beast. Actually, it probably wouldn't have been feasible, as I have a bunch of tangs, and wanted most of them added at the same time. I have a 55, but putting a bunch of new tangs into a 55 would have been like WWIII.

Still, I'd like it better if I didn't have occasional minor outbreaks. That being said, I don't have plans to add any more big fish to the tank, and just a couple of weeks ago I re-aquascaped 1/2 the tank and I like it a LOT! Those are the triggers...