I got some pulsing Xenia two days ago and it seems to be very happ (full extension waving and pulsing) but when I got it the guy there said that there were some Hawaiian something or other zoas attached but the Xenia is literally growing off of one of the 3 zoa plolyps. They haven’t opened since I got them. Is the Xenia irritating them and keeping them from opening? They don’t look like they’re dying just won’t open