Duncan looking a little deflated lately

[camaroguy]

Hi, I have had this Duncan, which started out as a single head, for 1.5 years now. It has always had very long "tentacles" on its polyps when it was open during the day. They have also always been rather fat. For the past few days they have been looking less fat and very less extended.

This morning I saw what looked like a dark stringy stuff coming out of a couple of the mouths, like the picture below you can sort of make out some of this in the mouth at dead center frame.

I have been dosing NOPOX for a few months now to get the nitrates down. I upped the dose a little since it didn't seem to be doing much lately. There is a little bit of cyano on a single SPS, but other than that all the other corals look as they have looked.

Stats are as follows:
PO4 - .04
NO3 - 10
SG - 1.026
PH - 8.0

These were taken a week ago, haven't checked them lately, but are usually quite stable:
Alk - 10.5 - running Red Sea Coral Pro and have been since I started the tank
Ca - 430
Mg - 1400

The only other thing I did recently was put new filter socks in about a week ago. I now realize I forgot to rinse them, but didn't think that was "harmful" other than making the skimmer go a little nuts for a day or so.

Is there some obvious reason this might happen, or is it even a problem?

 

[jestronix]

Did do a water change prior ? Hands in tanks without washing in RO ?

 

[camaroguy]

Water change on Sunday, same water I used the week before. Yes I often feed the fish with algae clip w/out washing hands in RO first. I suppose its possible there was something on my hands.

 

[heathlindner25]

The brown stringy stuff coming out of the mouth is poop, mine from time to time get larger and smaller polyps nothing to worry about....imo.

 

[jestronix]

I'm super paranoid around washing in RO , if I have touched something in the kitchen like antibacterial wipes or soap etc it could cause an issue, dunno I've just noticed I the days of not washing , I had times where things would close up slightly after I'd been in the tank.

However I've seen Duncan's close up like us for a few days, could be just a normal cycle they do

 

[joshky]

I think it should be ok, give it some time and see.

 

[dymaxiun]

I've see this reaction to high light, and high flow - just my $0.02

Are you feeding them?