Zoas turning grey

[joselopezsw2]

a couple of my zoas start to look like they’re turning grey in the middle.. anyone have an idea why ?

 

[PicassoClown04]

a couple of my zoas start to look like they’re turning grey in the middle.. anyone have an idea why ?

Did you buy them as a speckled morph? Kinda looks like magicians getting their spots in

 

[joselopezsw2]

No it’s not only those it’s a couple others

 

[ReefRoid]

Curious if you ever discovered the reason. I just brought home a watermelon zoa and the tentacles are orange but the center is grey now. Wondering what the cause could be