anemone dying help

Here is the short version. I have 4 anemones in my tank. 2 are doing really good and the other 2 seem to be bleaching out. Why? Long version (if you're still interested in helping me): I have 4 anemones. Two are rose bubble tips and they have been doing great for a few months now. The two other...

I've had these BTAs and they were all doing fine and today the dark green one detached from its rock and has it's tentacles retracted? Is it dying or on the move? It was next to this rose one doing just fine. Thanks in advance for your replies.

I came home from school to find my condy anemone stuck inside the filter, when i took him out a few tenticles were ripped and i dont know if its dying