I just whack off and entire stalk as close to the base as possible, the base will melt away in a week or less of sometimes regerate if a small finger is left. I then place the frag in the fuge wuththe cut side in the sandbed on over a piece of LR rubble. I've never had much luck using toothpicks, super glue, or rubber bands. The colt will shrivel up for a few days then start attaching to whatever it can get ahold of. After a week in the fuge the frag is ready to be traded off. when it attaches to sand, rubble, or base rock hunks it's easy to attach to existing tank structures using superglue alone.