Green star polyps closed


Reefing newb
We’ve had the green star polyps in our tank for about a month and a half and they were doing fine. In fact they were growing! Yesterday my husband was working on the electricity and he had the power out for about three hours (we are putting in a generator). At that time the temperature dropped 3° in the tank and of course there was no water movement. Since then the green star polyps have not opened up but the zoas are doing fine. Do you think they are in shock?