i just got a a white pulsing xenia. introduced him into my tank 3 days ago. Its limp, shriveld, and doesnt have any of its polyps extented. i tested my water and all parems. are good. i currently have a smaller stalk of xenias and they are doing just fine. can any bodu give me any tips? they have been limp and not looking so well for the past 3 days! since xmas. thanx.