Well, I got my anemone Wed., and it was about 1.5" in diameter! It was in very little water so I just temp acclimated it for about 30 minutes and placed it in the tank. After about 10 seconds, the motion from the water picked it up, and turned it upside down. I turned it back over and put it at the end of the tank between a rock and the side glass where there's less water flow. But it still would lift up and move a little, then settled back down. It's little tiny tentacles swelled up after a few minutes. Went to bed that night and by morning, it was gone.
It's now Fri., and I haven't seen it since.