When I got my first zoa’s about 2 months ago they looked just like the ones on the left which I got about a month ago. They were doing great until about 3 weeks ago and they have been dying out. It seems like the bigger parts died out and are now coming back because I see a few little things starting to pop out again. I’m not sure what the stem part is called. My water parameters are good and everything but if you can see coming out from under the plug is a little thing growing. It almost looks like a piece of coral but it came on the plug when I got it. It is not a zoa. Anyway I see 2 more of those popping out in between the new growth and I was wondering if that could have cause it to die back and it is taking over the zoa.