Is My Anemone Dying?

[zotospss]

So I just got an anemone at ReefStock three days ago. My tank is 9 and 1/2 months old, so I figured the nem would do well in this relatively new but cycled tank. When we put him in, he seemed very happy for a day or so; very puffed up, active in the aquarium, moving around, looking generally healthy. But yesterday, he started looking worse for the wear; he had attached himself in halfway up the wall in the right corner of the aquarium, but his foot began peeling off and his tentacles had deflated.

He eventually fell of his perch and moved to a new spot in the aquarium, looking very deflated, some stringy white things coming from his body. He did not look happy.

When I came home from work about 15 minutes ago, he had moved, and left some of his flesh where he used to be situated. I tried circling the flesh to make it more visible, but it's hard to see.

Some relevant info: I run 2 Red Sea LED 90s at 70% blues and 35% whites throughout the day. My params are as follows:

Salinity: 1.025
Nitrates: 0 ppm
Phosphates: 0 ppm
Nitrites: 0 ppm
Ammonia: 0 ppm
Calcium: 390 ppm
Magnesium: 1220 ppm
Alkalinity: 7.6 dkh

Every parameter has been stable throughout the anemone's stay in my tank for the last three days (although, I have just started dosing the tank for all, calcium, and magnesium about a week before the nem came in - levels are staying steady, though)

This is my first anemone ever, so I don't know what's happening? Could this possibly be normal? Is there anything I can do to help him? What do I do?!

Thanks :)

 

[zotospss]

The photos didn't seem to load, so here's a second try: