These Xenia's have been spreading like crazy and I am about to have to thin them out a bit. I have noticed them pulsing slower and slower every day. For the past few days they have not been opening and closing at all. All of them have seemed to have stopped at the same time. They have spread to the point that some are in high flow areas and some are not. Same with lighting. Some get a lot some not much at all. Is this a sign something may be going wrong? Tank parameters are testing normal and I do a 20% water change weekly.
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