help/input needed with zoas

[MaskedBehind]

should i remove these to dip? or is it a lighting issue as my other zoas are doing fine but these have been closed for ~2 days and the open ones are beginning to extend a lot

 

[2021 reefer]

If your zoa normally doesn't extend it probably needs more light and the polyps closing could be because it has too much flow or many other things like swings

 

[blasterman]

Dip won't help.

More gobstoppers. Glad they are making a comeback.

Zoas can stay closed when there is a significant difference in tank nutrient levels from where they came from.