Green Brain Coral (Trachyphyllia geoffroyi) losing color

[Bdeppen]

My green brain I recently picked up is starting to lose color. Below are two pics, day after it was put in my tank, and second one was a little over a week later. Temp(76.5), salinity(1.025), pH(8.2-8.3), alk(8.9) and calc(420) have all been nearly spot on. Nitrates hovering around .5ppm and phosphates .04ppm. As you can see its in the sandbed so as far down as I can get it. Any suggestions?

http://i254.photobucket.com/albums/hh83/bdeppen/355DD6FF-7981-4007-BBDB-E2F10B44E6A9-801-0000002716706935_zps8c4d249f.jpg

http://i254.photobucket.com/albums/hh83/bdeppen/15201543-233A-4CE7-B884-F69E39FC0CBA-801-000000271AEED756_zpsc360e054.jpg

[Bdeppen]

I do have a coral beauty who has not bothers any of my other corals, but I have seen her take one nip at this one once. Maybe that's my culprit?

[usmc121581]

Chances are its a goner, looks like most of the flesh is gone. Find a strainer that you can Pu over the coral to protect it from the coral Beauty.