For the past few days my kenya tree has been closed up. I've seen it closed up before in the past even tighter than it is right now but never for this long before. It hasn't extended out for a few days now. I do a 10% water change every week, it hasn't been moved recently, and I notice no damage or pests on it. Last week I did have a really high Ca level (not sure why) but I did a water change and it's now back to normal. Any idea what's going on with this guy? All other corals and livestock are doing great and growing fast!