Thanks. I know that some times they are hard to get to stick where you want them so what I do is I have a seperate tank that I frag them in that has some larger sand in it and low flow then I just let the pieces attach to the sand then I glue them to a larger piece of rock and that is the only way that they stay in a group for me, I also cut them around once a month right down the center and they either reproduce or connect again.