@I'm a natural blue , thanks for the prompt. So, sorry for not following through with this thread. I'm happy to report that sometime around the end of March beginning of April my tank was Aptasia free. These little guys really work. I can also say that while I would see them occasionally it was more like one day I looked at my tank and said, "wow all the aptasia is gone"! Afterwards I would still occasionally see a Berghia, they obviously were still breeding and hatching, but without food they didn't last. It's now almost August and while I'll occasionally see one or two or maybe three aptasia in my tank, those are easily controlled by a little Aptasia X.
So would I do it again, absolutely, though I hope my tank will not need it, at least for a long while.