That is cool. I have successfully fragged my star polyps, those are too easy. Just put a small rock next to the colony and within a month or two, they spread onto it. Then you just break the small rock away, place it in another section of the tank to make sure everything is ok, and BAM, they take off. I gave that piece to my brother-in-law.
I have another small rock waiting next to the colony now. I plan on trading this one in and getting some mushrooms.
My Xenia will be next. They took a little longer because like reiverix, I bought a dieing xenia colony for $7.00, to see if I could revive it, and it worked! I was down to 1 single xenia stem, and now I am back up to 6, in less than three months.
I plan to let the softies help fund my tank, that is a dream of mine anyways. Who knows if I will ever get there. At least I feel better knowing that in some small way, I am helping the hobby be self-sustaining!