I really like zoas because of their colors and ability to fill in certain spots in the reef but man I hate the way they are just taking over like weeds in a garden. They have even attached to my back wall now and are starting to spread there too. I've tried to use aggressive LPS and soft corals to contain and coral the spread. I guess I am going to have to start cutting them back. I'm not overly concerned with palotoxin but do they release anything into the water column as you prune? Just don't want my fish getting sick.