Originally Posted by roka64
A 4 hour acclimation, if you did the drip method, you probably lost a lot of heat. When you placed it back in, the temp change may have shocked it.
I noticed one coral seller on ebay that refuses to honor a guarantee if his corals are drip acclimated.
His instructions are to float the bag for 45mins and then place the coral directly in the tank.
I don't know if any of you all follow that advice, but I always drip for at least a couple of hours.
Perhaps after a long drip it should be floated in the tank to equalize the temps again?
I don't have that problem living down here in South Florida.
My A/C is set to 80° during the day and the tanks stay at room temp with the help of a fan.
When I drip, even for several hours, it still stays the same temp as the tank.
Getting back to your questions, yes, it's normal for xenia to close tight like a fist when they are stressed.
When my fish chase each other thru a patch of xenia they leave a trail of "closed fists" behind them like a car driving thru a cornfield.
They will also close up and "wilt" at night when the lights are off.
They are very photosensitive so they will definitely have to adjust to your lighting.
I notice a huge diference in color, size, and activity between the patches I have growing in direct light, and ones that are in the shade.
At this point only time will tell if they are going to survive in your tank.
keep them in low to low-moderate flow, and in direct light until they either look like they did in the LFS
or start to shrink up.
Unfortunately, once they start shrinking up and melting away I've never been able to bring one back no matter what I tried.