I purchased a frag of pulsing xenia last night attached to a small rock.  It looked good in the aquarium where I purchased it, but about half an hour after I put it in my tank it now looks wilted and not pulsing.  I have attached a picture.  I have moved it around in my tank a few times.  I have read that they require strong current and high to medium lighting.  I have a 180 gallon with 3 - 250w MH and 4 - 96w power compact actinics.