Few Corals Bleaching

[reppo13]

Almost a week ago I went vacation so I had a sitter take care of the tank. My green monti cap and a purple stag were partly bleached and one acro was dead when I got home. When I saw my tank I noticed that my monti was partly covered up by a different coral and was white in that area, I removed the coral because it was totally dead. The monti is continually losing color. The stag was bleached on one branch and hasn't gotten any further. I was placed next to a galaxea and some of the polyps were touching it. Not sure if that was the cause. What can I do?

 

[reppo13]

Forgot to add no brown jelly or ooze, water para. is good.

 

[twinypalm]

I think the problem is with the Galaxea. Galaxea can extend their polyps very far and will sting and kill all nearby coral. You need a lot of space around the Galaxea.