Closed Sun Polyps

Get used to them being closed all the time. I got rid of mine for that reason. Nice coral, but boring.

don't listen to that first comment, my sun opens all the time, I trained it to open earlier everyday by feeding it early, it needs to get fed almost everday. As much as you can, but be careful of overfeeding, it is a fine line

mine open evernight around feeding time and stay open till the light goes out. they are a very interesting coral.