i just got a long tentacle anemone (sp?) the day before yesterday. yesterday it kinda deflated and tucked itself in for a while but then inflated and went back to beautiful! but, then this morning, i got up and checked on it and it's not anchored to anything. just kinda laying on the floor, rolling around a little bit... is it normal? should i pick it up and set it upright? leave it alone?

i posted on an aquarium site and have gotten no answers so i decided to try my luck here since there's always someone that knows something about everything! lol!