Coral expelling something

[scumonkey]

I just obtained a nice pagoda cup coral last night.
This morning all the polyps were out and it was looking nice.
Just now when I went in to give it a little cyclop-eez and oyster eggs,
I noticed long slender brown threads being expelled from some of the polyps. Is this just the way these corals poo, or is something wrong- like expelling algae?

 

[Shiandy]

They can slough off the upper layer of tissue, maybe this is what your seeing, good water flow should prevent this.

 

[reefshadow]

Could be the natural expulsion of waste and/or zooxanthellae. It happens sometimes due to stress, also for no apparent reason at all. If the coral looks normal besides that and develops no colour or tissue loss, I wouldn't sweat it. Pagodas are pretty hardy.

I've seen lots of different corals expell zoox in this manner for no particular reason and with no discernable bad effects.

 

[scumonkey]

Thanks!
It was only a few polyps and they stopped after only a few minutes.....
They all opend back up and the whole coral looks fine (actually better after feeding)!