too cool, when i frag my soft coral i have a small tupperware bowl with some crushed coral in the bottom, i put the small cut pieces of the coral frags in the bowl andd place in the end of the frag tank in the low flow area, in a few weeks when you see them growing etc, you can take them out, they will have attached themselves to some of the small crushed coral rubble and you can then glue that to the frag plug, the trick is to put the super glue on thefrag plug and let it sit a minute, then use a old towel to blot the end of the coral frag slightly dry so the rublle attached to the coral frag will stay attached almost instanly to the frag plug, i have found that if you do it this way very few , 1 out of 50 , accutly come lose, mayby not a perfect way, but it works for me, i have tried rubber bands, i always either get them to loose or to tight, and wind up trying to get the rubber band untangled from the power head in the morning