Brown Jelly Disease on Duncan

[Nigel35]

Over the coarse of about the last month or so some heads off my Duncan have slowly shrunk and then died. Pretty sure it is brown jelly but wanted to confirm my suspicions.

PM's As listed:

CA: 400-420ppm
Alk: 8ppm
Salinity: 1.026
Ph: 8.3
Phosphate: 0.25ppm
NO3: 20ppm

 

[Coralsdaily]

I just went through that recently. In my specific case the colony had grown too dense and there wasn't enough flow in the middle of my colony so the polyps were drowning in detritus. I first fragged the colony into four smaller colonies, then I also improved flow in my tank and now all four baby colonies are thriving even growing back over the previous dead heads. Not to say this is the same issue but worth considering how flow may affect your LPS in the tank.

 

[Nigel35]

totally could be that as well! it is a very dense colony.