My elongata has done about the same, sway with the current but all shriveled up. Unlike yours, they don't look real good. I have thought about getting them out of the tank, but they get taller when the lights come on so I feel guilty. I have 2 skimmers built in and can't remove them. I don't see how they could be the problem. Gary told me it could be the lighting - did you change any of yours?