Pulsing Xenia Acting Random...

My pulsing Xenia keeps acting really random. I just put it in my tank today and it was fine for the past 10 hours, but now it just started shrinking and growing over and over. It was just a few stalks doing it randomly at first, now its the whole colony. I have another colony in the same tank, same type of xenia, doing fine. Has anyone else experienced these oddities?
 
The first day or two, it will act weird.. basically it's mixing the water inside itself with the water in the new tank until it reaches a balance.
 
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