I got a piece of pulsing xenias from a friend and within a week or so it disappeared without any trace of it. I know that they are very hardy and so I assumed that it's death was due to the way it was frag'd. I got another piece that the LFS gladly donated that was properly attached to some LR and figured I'd have another go at it. This smaller piece didn't even last 48 hours. It was just gone without a trace. Any thoughts on what might be eating them? I had reservations about adding them in the first place and all of my other corals are healthy, so after two tries I think I'm done. I would like to know about it though, if I have a predator in the tank. The immediate culprit that comes to mind is my giant emerald, Joe. Any thoughts?