What is this yellow stuff on my Duncans

[fishgirljockey]

Thanks for your answer!

its mostly on the tentacles not on the structure at all. I dipped it once in polyplab’s coral dip, when I bought it.

my Duncan is in a 50l/ 13 gallon quarantine tank because I want to try my best to follow the 76 days quarantine procedures ( it’s a pain in the... to wait that long).
I have only a heater, a flow power head, and some rocks out of my main sump in the QT.

I bought the coral with 9 heads 2weeks ago from a LFS.
All of those heads had 2 or 3 little white dots under their polyps. Those dots are now all little heads with tentacles and little mouths and they are growing fast.
the coral is eating good as well.

So it behaves really, really healthy but with that yellow stuff and the tentacles not fully expended it doesn’t look very healthy.

I can’t find a lot of information on that but I think I will just keep doing WC and feeding and let it do his think. I just don’t see myself putting it in the main display with that stuff on it.

but yes, still 8 weeks to go in quarantine

Did you ever find out what the yellow modules were? I have them on one of my Duncans. I can't seem to find any information about them!