Quick help with xenia losing polyps!

[mark_d]

My xenia's have been doin fine since i got em... they even fragged twice! But today and the day before i saw some polyps lyin on the sand... Do xenias drop em regularly or is something cutting them off?
This is what I have in my tank :
https://forums.saltwaterfish.com/t/225026/my-nano
(posted pics of everything there)
If i got all the names right...
Fairy Clown Wrasse
Purple Firefish
Mandarin Goby
Bicolor pseudochromis
1 redleg hermit
3 blueleg hermit
1 hawaiian zebra hermit
4 grey leg? striped leg? hermit
5 unidentified hermits (pinkish color, see thread for pics)
Coral banded shrimp
Cleaner shrimp
Anemone crab
Porcelain crab <--(picked up @ beach, was very small and had no claws. It feeds in the same way my anemone crab does (puts out little fans and filter feeds).. I dont think he is the culprate, but he just got his claws 2 days ago (even tho they seem to small to cut the xenia...)
Any idea whats goin on? I doubt its one of the things I listed.... is anything there not safe to keep with corals?

 

[hexedagain]

Are the polyps that are being dropped or cut off dying?
My xenia drop polyps all of the time. After a few days you can see them starting to pulse.
Also, can you see, off of the stalk, a arm missing a polyp? Or multiples?
I would watch the fallen polyps, and see if they die, or just start a new colony for you.