Hey All, so I woke up this morning and checked my tank with a flashlight like I do every morning and noticed two areas on the base of my strawberry shortcake acro where the tissue receded off the skeleton over night. The SSC has been in my tank for 3 weeks today without issue. I was even beginning to see some more growth from the base on the frag plug. I just checked all my parameters and everything is normal for my tank. Tested with red sea kits with exception of the Phos test which is Salifert.
Nitrates: 5-10 ppm (a little high for SPS I know)
Phos: 0.01
Ca: 425
Mg: 1520
Alk: 8.4
Salinity: 1.025
Temp: 80
Mag has always been a bit high but I haven't had any issues with this previously. I also recently began running Kalkwasser in my ATO to help keep my Ca levels up. All other SPS/corals seem to be fine, but my rainbow micromussa hasn't opened since I changed the water on Friday.
Heres a photo with the affected area circled.
The other white area below the circle is a bit of coral glue from a messy frag gluing job. Oops. That was about two weeks ago.
My only course of action at this time is to continue to monitor it and see if it spreads any further. Anyone have any ideas on what could possibly be causing this? Should I be doing something else to address this? I don't want to make any drastic changes to the tank when everything seems to be doing well.