Duncan Discoloration, disease?

[NCsalt]

Duncan has this red striations starting at flesh base and moving up.

Trying to make sure its not brown jelly so I can get it out if it is.



Doesn’t smell, doesnt move if hit with turkey baster. Has been semi closed for a while, i thought because of new head growth. Fully closed becuase i was messing with it to get pics.

Discoloration only on one side.

 

[Mr. Mojo Rising]

I don't know what the red is, but the coral is dying, and I don't think that red has anything to do with it. Maybe want to check your water parameters, something might be off.

 

[NCsalt]

Checked parameters after your post.

Phosphates somewhere between .03 and .1 Salfiert Test colors aren’t that easy to dechipher.
nitrates: .10 API .10-.25 Salfiert
PH: 8.4
Alk 8.6 the day before I will check again at normal mid day time tomorrow.
Cal was 420 the day before.

I had some Alk swings through late summer and some PH drop but have had it stabilized for a month. Had some torch coral recession but seemed to have halted after stabization.

SPS growing well. 4 types of monti growing steadily. Hammer branching. Leathers growing.

I do have a Octospawn within about 3.5 inches of the duncan. Wonder if there is a night sweeper or something.

Also the flesh has always been this high up on the base since I got it in the spring. It was one head. After forming the 5 new heads it never opening all the way up again. I may need to feed more as well?

Coralrx dip?