Palytoxins are in all zoas and palys to a degree from what I've read. Take precautions when fragging. You can't be safe enough. But just hanging out in your tank, I would think that rarely would cause any issues unless you irritate them. It's good practice to wear gloves when putting your hands in the tank and avoiding doing so if you have cuts on your hands or arms. What is that at the top of the first pic, some sort of favia?