Ok so maybe a bit of a strange post or question. I have some greens zoas/palys (pretty sure they are actually zoas) in my tank that i cannot get rid of. When i broke tank down 2 years ago to move i trashed rocks and broke off the small sections to get rid of them. Well wouldn't you know they popped back up again and are trying to take over an area. i have some on overflow as well..... I am afraid to get in there and scrape or cut them because of fear of paly toxin and the spot they are taking over is at the bottom of my rock scape in my 150g. Near impossible or tons of work to break down to remove the rock. SOOOOOooo i started thinking about back when i had a hollywood stunner chalice and how it went to war and won with any other coral it got close to. My thinking and question is, if i put a good size frag of hollywood stunner (or some other coral?) next to them, would it kill the zoas back and take care of them for me? Anything dangerous that could happen? Could this release toxins in the water?