I have a few small frag plugs with some cool zoas that seem to be open and doing well (armor of the gods, dragon eyes, and green bays). I would love for them to turn into a large mixed zoa colony like I see in tanks. They are all on the sand bed now on their plugs. Do I just cut off the stem of the plug and glue them to a rock? If so, how close to I put them together? Should I let the frag plug get mostly covered before I do? Will they sting one another?