Earthquake Favia dying?

[Nardi]

This was sold to me as an earthquake favia. About a week ago it started forming this white stuff at the base and it's slowly been consuming it. I checked my calcium and it was at about 520ppm and my magnesium dipped to 900ppm. I've since leveled them out. Is it too late for it?

Current levels:
PH - 8.2
Phosphate - 0.18
Nitrate - 8
Alk - 9.3
Calcium - 445ppm
Magnesium - 1300ppm
Salinity - 1.025sg

Pictures taken in the morning before the lights turn on.

 

[Nardi]

The only thing I can think of that caused the calcium spike is adding some new rock that I didn't scrub, only swirled around in rodi water.

 

[Cell]

The white stuff is exposed Skeleton because the tissue is receding. The favia is dying,but could still recover with optimal conditions. It's more likely to consider declining though at this point.

 

[Nardi]

The white stuff is exposed Skeleton because the tissue is receding. The favia is dying,but could still recover with optimal conditions. It's more likely to consider declining though at this point.

That's what I was worried about, hope it'll recover in time while I keep a closer eye on parameters. Thank you.