I used tape only on the one that was actually a dud, lol. So I'm still not sure if that was actually safe or not for them.
That's what I was wondering, might not be a bad idea.
I know @Pyxis used tape on those emu eggs, I'm not sure what kind. i guess that could be another option.
I guess I'll have to do the egg shuffle now and get that humidity up. Meanwhile I think the aircells on the ones due this week look a bit small. I need happy medium!