Brown pulse corals going green?????

[ckrhone]

I have sveral brown puls corals in my tank and over the past two or three days, have all started to retract and go a pearlescent shade of green. They are still pulsing slightly but I am concerned. Can anyone diagnose what may be the problem? All water parameters appear to be good.

 

[OrangeKoi]

chemical warfare!:eek2:

 

[gflat65]

Can you post a pic? By brown pulse coral,I'm assuming you mean xenia. Never heard of green tinted xenia...

 

[ReefHoBo]

i have seen a blue xenia before, but not green. lighting maybe.