Random RTN on healthy frag and possible bug?

[FishRN]

I had a perfectly healthy acro frag lose all tissue overnight I see what I believe are pods on the white part of the skeleton of a birds nest that is halfway gone, but would like to confirm. Not sure what caused it but parameters are
Alk 8.8
Calcium 390
Mag 1300
Phosphate 0.49
Nitrate somewhere between 12-20 on Nyos kit
Salinity 1.026
Temp 80-81F
All lps and softies look ok.

 

[Tahoe61]

The pods are likely consuming dead tissue. Sps are tricky, causes of STN are speculative. Double check the SG, temp is elevated and the phosphate level is on the high end. It could be one of those variables or a combination.

 

[Sweet Reef Corals Verified Sponsor]

I had a perfectly healthy acro frag lose all tissue overnight I see what I believe are pods on the white part of the skeleton of a birds nest that is halfway gone, but would like to confirm. Not sure what caused it but parameters are
Alk 8.8
Calcium 390
Mag 1300
Phosphate 0.49
Nitrate somewhere between 12-20 on Nyos kit
Salinity 1.026
Temp 80-81F
All lps and softies look ok.

My first guess at a cause would be the extremely high phosphate at .49