Your comment is a year old but I have this same issue and am curious. I put zoa frags in my tank from stores with very low light (my tank has acros at the top and the light is strong). Now they're closed up. Some have stayed closed up for weeks, even several months, while others have acclimated. I'm more careful now but not sure what to do about the ones that got burned.So, I keep hearing with proper acclimation to the light they'll accept about any lighting/tank position but what if you now realize you made some bad choices and didn't acclimate like you should have? Do you just leave them where they are and wait it out or what? They are pretty closed up and looking bleached. I've had them about 3 weeks and they popped out a new one a couple of days ago and looks like there is about to be another one. Sometimes they are slightly more open than shown in this picture but never super open.