I had 11 zoa frags shipped to me, and received them yesterday. They were in transit for 2 days. Today, most of the polyps are still closed. A few are open, but the vast majority are staying closed. They were under Tek T5's in their old tank, and are under Tek T5's now. Is this normal for zoanthids? When can I expect them to open? How long does it usually take? Thanks.