Not sure where to start I have been losing corals one after the other for a few weeks now and I always seem to come up with an excuse to why it happened but I’m fed up and could use some help. The tank is about 4 months old and I recently had an ich outbreak so all my fish are in qt while the tank sits fallow. I’ve dipped every single coral that goes Into the system and my parameters have been stable for the past month without fluctuating much at all. So far I have lost a mini acan lord colony , the tissue receded and slowly started to show its skeleton until it was gone. After that I lost a no name Acro frag which just stripped and went white over a few days. I then lost another slightly bigger Acro frag in the same way. And most recently my acan bowerbanki frag (1) Head is slowly starting to melt and show skeleton as well as my Scoly. When I had fish in the system I was feeding reef roids once a week now since the tank is fallow I spot feed every coral every other day with reef roids and I feed frozen Lrs to the bigger corals. The only corals that seem to thrive and grow new polyps are zoas and my Duncan. I did a full parameter check today and this is what I came up with. Alk 8.5 - Hanna checker Cal 451 - Hanna checker Mag 1410 - Salifert Ph 8.1 - Salifert Phosphate .034 - Hanna checker Nitrate 2ppm - Red Sea SG 1.026 - refractometer calibrated at 35ppt Temp - 77.5-78 The tank is a Red Sea reefer 250 with 2 ai primes running the brs ab plus copy profile. The only things I dose are esv bionic 2 part. The sump has a refugium section with chaeto and miracle mud (just added this week) I’m sure I am forgetting something and I apologize for the scattered post just trying to get all my thoughts out. I appreciate any and all help.