Duncan coral head peeling

[wcab.1]

Had this Duncan for around 4 months. It has been perfectly healthy and recently began sprouting new heads.

All of a sudden, I come home to see the head is peeling off. Any reasons why?

 

[Sshannon]

What are the most recent parameters? Salinity, alk, calcium, temp, ph, nitrate?

 

[GK3]

Had this Duncan for around 4 months. It has been perfectly healthy and recently began sprouting new heads.

All of a sudden, I come home to see the head is peeling off. Any reasons why?

+1 on parameters. Duncan’s are a canary coral in my experience.

 

[wcab.1]

Salinity: 33.8
Alk: 8
Calcium: 400
Temp: 78
pH: 8
Nitrate: 30ppm

 

[vetteguy53081]

Had this Duncan for around 4 months. It has been perfectly healthy and recently began sprouting new heads.

All of a sudden, I come home to see the head is peeling off. Any reasons why?

Things that will cause this:
Too much water flow
Too much light
Low calcium
Elevated Phosphates
Insufficient feeding
The crab in pic??

 

[GK3]

Salinity: 33.8
Alk: 8
Calcium: 400
Temp: 78
pH: 8
Nitrate: 30ppm

Nitrates always that high?

 

[wcab.1]

Nitrates always that high?

Ya I can’t seem to get them down with minimal feeding and regular water changes.

Luckily, upgrading to a larger tank this week.