Picked up a frag of Rasta zoas 2 days ago for 25$ with about 12-15 heads and the day and night I got them all the heads were open but yesterday and today so far only 5-6 ish have been open and the rest closed. Parameters are good and I did a 25% water change yesterday. I’m very confused because of the few that are fully open. Is this just a part of them adjusting to the new tank or does it warrant concern. Thanks!