So, something seems to be killing 2 of my millipora AND my neon birdsnest! I have NO idea what is going on... everything was perfectly fine yesterday! Then this morning I noticed these white fluffy looking things. It kind of seems like they are rotting away then leaving the dead skeleton behind. But it doesn't look like recession to me. But the thing is that the over all coral seems fine! No color loss, polyp extension is good... looks normal and not upset other than these dying branches. That goes for my neon birdsnest and my other mille too. The mille in the pic has its polyps retracted because I was rubbing to see if this fluffy stuff comes off and it does but comes back. You think I should try and frag off the dead/dying tips to see if that stops whatever is happening? My tank is a good year and a half old, all parameters are perfect for an SPS dominated reef. All other sps and lps in the tank seem fine! At first I thought maybe my torch coral stung the pink mille pictured but the exact thing is happening to my other mille on the other side of the tank, and my birdsnest in the middle of the tank. What does this look like to you? And is seems t be happening at a good rate because last night everything was fine! Sorry for the pic, its the best I could do with my camera.