General Zoa question

[gsw0716]

I love Zoas and have a ton. Zoas like my Rasta and Circus are always open, but a few of my Zoas like my Gatorade or Scrambled egg zoas are always partially open and partially closed. For those of you with a lot of Zoas, is this a common occurrence? I never have all my Zoas open at once. I do also have inverts that are near them a lot.

 

[bluemon]

If possible I would try moving them around.

Even within zoas, different varieties appreciate different light and flow