Keep your eye on it. Anemones are not particularly difficult, but most people buy first, and ask questions later. If your parameters are stable, and consistent with that of a reef tank, your other hurdle would be with lighting. My sebae was in a 31" deep tank lit by a 250wHQI MH. It was at the bottom and flourished, but a newbie mistake cost me that tank (a sea apple).

Anemones are hard to judge when they are dead as well. Sometimes under extreme stress they will invert exposing their mouths which would be gaping. If it gets to that point, try and house it in a QT tank. A 5g bucket could work, and swapping water with properly heated, aerated, fresh SW daily (about 1g or so) should help if it is a WQ issue. Keep the flow minimal, since it is a bucket. Make sure you have sufficient lighting, and keep an eye on the temp. It's good to have a few small backups like this just in case. If after a few days the nem becomes responsive to food, and is extended, reintroduction to the tank should be ok. Just triple check the water over a few days before, keep a log, and run carbon prior to re introduction....