Ironically just read this thread and I will tell you I am in same situation as Duncover. My branching duncan is at top of my scape and in high intermitent flow rate and loves it. I feed it mostly mysis once a week and sucks them in so fast and looking for more in a couple of hours. This was my first coral I bought about 6 months ago with about 12 heads and now over 26 and I have a reatively low ph and alk tank and trying to get it up but has grown regardliess grows. I am wondering now if I get those params up higher how much more it would grow.