I have about 5 different frags of zoas and polyps that are on different rocks (see my photo gallery) and the rocks are weird shapes. I want to mount them to the rock work but I'm not sure where to put them. I haven't mounted any before and was wondering if I should worry about them spreading on the rock work to much. Is it easy to frag them if they start to grow out of control? I have seen other members tanks that have huge zoa colonies that are part of the main rock work. Should I just glue them and let them grow as they please or is there a certian place that I should put them. I hope this makes since. Sorry I can't post the pictures to this thread. I'm on my iPod touch.