O.....M....G.. that is liquid gold you have there, that is soooo big and you only started with three heads you must really good water quality and flow and lighting. How old is it??
About 6 years ago I had 3 heads and I thought they died. Too much flow on them. Put the skeleton in back of tank in low flow area. One head started to come back. Now I have what you see. One tough coral.