I'm pretty sure all zoas have palytoxin =p. I was a apprehensive until recently about getting them, but I'm hoping I can just put them on an isolated rock on the bottom of the tank and get a nice little completely covered rock. They'd smother my Sarcothelia if they spread so I'm a bit apprehensive. I read that they spread by assexual budding and can "jump" across the tank. If so, I'm probably going to go with some trumpets or blastos.
But yea to grow them on another surface just frag them. Use gloves to be safe, because if you accidently cut yourself while handling them you will get palytoxin in your blood. Wash your hands real good after you handle them, because if you rub your eyes or lick your fingers or whatever, you'll get nausea and a metallic taste if it's a small amount. It is deadly if you are allergic (humans are already oddly sensitive to it) but assuming you don't slurp it up you won't die.
Display tank - 24g nano w/ softies/montipora
I run electrical appliances underwater and enjoy injecting things with Kalk filled syringes.