About 1.5 to two years ago I started with one Green Sarcophyton with a head of less than 1/2 inch across. Over time, I fragged it and now I have 5. The largest one has a 2+ inch head on it. I plan to let that one continue to grow and re-frag the others when they are large enough. Three of mine are under VHO lighting, one under a halide and 1 under PC lighting (all different tanks).