Coral Damage - What could cause?

[Michael Hull]

I have a chalice coral and another coral(forget name) that I've noticed some skeleton/tissue on in the last day or two. Parameters are as follows:

Sg: 1.025
ph: 8.2
Temp: 78 (fluctuating a little with intro of new chiller (77-79)
Alk: 8.9
Mg: 1280
Calcium: 429

Any thoughts on what could be causing this/what to look for?

 

[JustAnotherNanoTank]

Have you added or taken away any GFO recently?

 

[Michael Hull]

I have not. Never run it.

 

[JustAnotherNanoTank]

How long ago did you add the chiller? Did you flush it really well before introducing it to your system?

 

[Oldreefer44]

What are NO3 and PO4 test results?

 

[Billdogg]

It looks otherwise healthy. Could it just be damage from being a fairly new frag?

 

[Michael Hull]

How long ago did you add the chiller? Did you flush it really well before introducing it to your system?

About ten days ago, did not flush.