One Zoanthid colony will not open up?

[rja]

Hey all,
So my tank seems relatively happy. Everyone seems to be opening up completely except this one colony of radioactive dragon eyes. I have like 5 of the same zoa across the tank and they all open just fine. It’s just these ones and I’m not sure why. Been closed for about a week. Weird? Not going to change any parameters or anything— not going to do that just because one coral isn’t happy. But if there is any tribal knowledge out there that pertains to this circumstance please help. Like blowing it with a turkey baster or something?? These guys are encrusted to the rock so I can’t pull them out.

 

[bnord]

Know it doesn't provide explanation, but I have observed the same over time. On multiple strain same rock colonies or isolated colonies on other parts of the scape. A week seems about normal, and 2 weeks too long.
So others may have other explanations but hang in there and do not overreact with treatments/changes in my opinion

nice tank by the way

 

[rja]

Know it doesn't provide explanation, but I have observed the same over time. On multiple strain same rock colonies or isolated colonies on other parts of the scape. A week seems about normal, and 2 weeks too long.
So others may have other explanations but hang in there and do not overreact with treatments/changes in my opinion

nice tank by the way

Thank you! Yeah they were opening fine when I first got them a while back. All of a sudden just lights out. I’ll leave them be but what are the dangers if they do melt away?

 

[bnord]

I have also had, rarely, some strains slowly fade away, but only in multi-strain "gardens" and then attributed it to competition
Its hard to not over react to one coral doing poorly and all else is well. Sometimes its not the tank, its just that coral - smile
of course WC and change carbon does no harm
good luck