Help with Duncan colony

[jvaughan1355]

Need some help identify what’s happening with a few of my Duncan heads. Looks like some exposed skeleton and white hardening around a couple heads. See pics below thanks for the help.

 

[EeyoreIsMySpiritAnimal]

Have there been any swings in salinity or alkalinity?

 

[jvaughan1355]

Have there been any swings in salinity or alkalinity?

Not salinity a small amount of Alk when bringing up from 7.8 - 8.0

 

[jvaughan1355]

Have there been any swings in salinity or alkalinity?

Not salinity a small amount of Alk when bringing up from 7.8 -

Not salinity a small amount of Alk when bringing up from 7.8 - 8.0

I did take the colony out and baste it off there was some algae stuck on it pretty good hopefully that was the issue

 

[vetteguy53081]

Need some help identify what’s happening with a few of my Duncan heads. Looks like some exposed skeleton and white hardening around a couple heads. See pics below thanks for the help.

View attachment 3166333

These guys are stressed and maybe due to:
Location- Mine do best at mid tank under moderate light and water flow
Temp- Assure not elevated
Feed- Best is mysis shrimp
Assure Phosphate not elevated

Here is location in tank of mine:

 

[jvaughan1355]

These guys are stressed and maybe due to:
Location- Mine do best at mid tank under moderate light and water flow
Temp- Assure not elevated
Feed- Best is mysis shrimp
Assure Phosphate not elevated

Here is location in tank of mine:

View attachment 3166577

Yea mine typically look like that I made them shrink up for the pic purposes I guess I should’ve mentioned that, they are usually big but a few heads were staying small and I wanted to investigate more and saw the heads with the white on them. Wasn’t sure what the white part is. This is an hour after I took them out and basted some algae off of them

 

[vetteguy53081]

Yea mine typically look like that I made them shrink up for the pic purposes I guess I should’ve mentioned that, they are usually big but a few heads were staying small and I wanted to investigate more and saw the heads with the white on them. Wasn’t sure what the white part is. This is an hour after I took them out and basted some algae off of them

White film may be protective mucus found on the skeleton. Speaking of skeleton, assure calcium no less than 380 for skeletal health. Im optimistic they will return to full in the next 24-48 hours