Have had a elegance coral for about a year and has been doing great up until about a week ago. Has 4 cones and 1 has died off. Haven't moved it for a while. Nothing else is very close to bother it. Could something at night be messing with it? Will the other sections die? All my water parameters seem fine. Have been having issues with Cyano and been treating with waste away. Since I started treating it seems like all my corals are doing better, little bigger. Skimmer seems like it is taking more junk out of the water... Not sure about reducing any Cyano yet.. Any ideas?