Green Bubble coral not opening?

[strendo]

I picked up a nice piece of green bubble coral and it's not opening in my tank. All my parameters are perfect and all my other corals (mix of sps and lps) look great. I even have a white bubble that I've had for a year and looks great.

Any sugestions? I've tried moving it around to more shady locations. My guess is that I have too much flow. i have 90g tank with a vortex on low, a small tunze and a wavy sea return.
It seems weird that the white bubble is fine right next to it.

[strendo]

Anybody?

[Bcollins111900]

give it some time. It may take a few days for it to open up. What kind of lighting was it under at the store you got it from? What kind of lighting do you have?

[strendo]

I've had it for a month. It was under twin 250mh at Grenich Aquaria. It's under the same setup in my tank, the only difference I can think of is too much flow??