Chalice bleaching ?!

[nayrgaijin]

I have what looks to be a frag tank.... Sadly its my reef tank i've just bought more than it could handle haha. Anyway everything is fine except one chalice bleaching randomly ? It's not within reach of another coral stinging it, it's not under intense lighting by any means its quite shady where its at.
It's in between my scoly and purple acan. The pink chalice. Thanks !

 

[aquafrags]

everything seems healthy, I would be very careful it is in a warzone at night, Feeding Time, some of the feeder tentacles can reach farther than you think

my tyree red, I have seen 3-5 inches of extension

 

[nayrgaijin]

I will move him temporarily to see what happens. Thanks for the quick response :)

Holy crap thats long btw ! haha