anemone deflated

Looking for a bit of information, reassurance, or advice on why my Haddoni anemone might be shrinking like this. This is one of two Haddoni anemones in the tank. The other anemone is opening full and happy. Last week, we lost power for over 30 hours, and I had almost half of my fish die...

I have had this bubble tip anemone for over 1.5 years, and it has done excellent, showing lots of growth in that time. The last few days, though, it has been struggling, going through inflation and deflation cycles 2-3 times a day. The times that it is inflated, it isn't fully extended, though...