Ok so I purchased a pulsing xenia frag with three branches. They looked great the first night now its day three and they are laying down and some of the polyps are closed. Hasn't pulsed since the first day. And now I just noticed a "tear" along one of the stalks. Is this them starting to disintegrate? My tank is a 30 gal
hex. and stats are normal 0 nitrates, nitrites, ammonia, and my sg
is 1.025. cal is a little high at 520, trying to lower it. I moved the xenia to mid tank. What should I do?