Mushroom Coral Questions

[FRANK GRAZIANO]

Why do mushroom corals close up at night sometimes have 2 of them and had them for 3 weeks both only closed up once at different times. Is this bad or good

 

[Reeferdood]

Why do mushroom corals close up at night sometimes have 2 of them and had them for 3 weeks both only closed up once at different times. Is this bad or good

Almost all corals will close up at some point during the nighttime, perfectly normal.