Been having issues the past few weeks and I lost a few colonies of rare zoo/palys. I began using the Mark Weiss Coral Vital and shortly after I found a few empty plugs on my rocks. All my sps and LPS are doing great, but for some reason the palys are suffering. Did a 15g water change yesterday, I hope that was enough to get the tank back on track. There is def something wrong, all my colonies are receading. Ill post pix in a little bit.