Haddoni carpet shriverling up under lights

[Taylor85]

Hi, looking for some help. Had our haddoni anemone a month with no issues what so ever but over the last 3 days about 90 minutes after lights come on its started to shrivel up, once lights are off it swells up again, is this common? Does anybody have any guide de or expires de in this matter? Thank you in advance

 

[DasCamel]

Every 2-3 weeks mine completely hides from lights and the comes back looking great. Not sure why.