Dying Duncan...ideas?

Lookabill

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Everything else seems fine... no other stressed corals. This guy got knocked over by a snail a bit over a week ago, things started to go down hill a few days ago, several heads closed, then turned dark...now spreading. I am not seeing pests. Thoughts?
20200405_085405.jpg

Parameters are stable...
PH 8.3
Sal 1.025
Kh 10
Cal 440
Am 0
Nit 0
 

cloak

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Brown Jelly Disease? If this is the case you might want to break off the two polyps in the foreground and toss the rest.
 

cloak

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I've never had it spread from one coral to another, but then again I don't have a whole lot of experience with the disease either. Once it showed up I would just toss the coral and be done with it. An Iodine dip or something like Coral Rx might help, but like mentioned above I never took the time to find out. Hopefully somebody with more experience with this disease will chime in here soon.
 
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Brad ward

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Photo here.
Everything else seems fine... no other stressed corals. This guy got knocked over by a snail a bit over a week ago, things started to go down hill a few days ago, several heads closed, then turned dark...now spreading. I am not seeing pests. Thoughts?
20200405_085405.jpg

Parameters are stable...
PH 8.3
Sal 1.025
Kh 10
Cal 440
Am 0
Nit 0
Mine started to brown jelly within an hour for some random reason
Did the reef dip and saved most of them
Good luck
 

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