anemones are (like I do my own type of thing) usually if they are not happy they will scout your tank for the best spot, and usually it's a really random spot, I have a 10in carpet anemone and it goes through my LR trying to find its best spot, when its moody it can cover the tank overnight and re-appear at the other side, just be sure feeding habits are fine and parameters and the anemone will long live.