Well, the RPE's grow a new polyp every week, if not more. Most of my zoo's grow very quickly, and if I place them onto a new rock, they attach with new polyps within a week or two. I have had very good sucess with them in my SPS tank. I keep my salinity at 1.025 (I have noticed my zoo's don't like anything but 1.025, if its .001 higher or .001 lower I can see it right away.) I keep my calcium at 450, dkh at 11, and magnesium at 1350, pH at about 8.1-8.2
I might be moving all my zoo's, ricordia and mushrooms to my new 12g aquapod, in the process of trying to find a MH fixture that would fit on this tank, before I make the move.
-Mike C.