Sounds like they are doing well. One person I know got insane growth from them. He is the only person that I have seen get that kind of growth. He started with one polyp about a year ago and now has over 30 polyps....
Yeah, would love to see a photo!
Gary
Feeding seems to be the key to their growth. I had originally purchased two from you and at first they were just barely hanging on...after I adjusted my tank, flow, lighting, etc, they started doing much better...but would never grow/spread. I decided to start feeding them and about a week later I noticed babies. I kept feeding the main polyps/babies and then they crashed and left me with the two original polyps...I figured I may have overfed them.
Now they're going strong again and I feed about once every 3 days and little babies keep popping up.