Duncan closed up

[rousejust406]

I have 3 Duncan’s all about an inch apart. 2 are frags from the same colony. One when straight into my nano tank and the other spent a week or so in my 60 gallon reef. The third one I just got 2 days ago. The one that was in my 60 will not open up. I moved it to my nano about a week ago because it looked rough in the bigger tank and it doesn’t seem to want to fully come around. It has improved for sure but just not to where I had hoped to see it by now. Water numbers are good and flow can’t be too bad as it is almost touching the other that is doing great. Any ideas? Pic is the happy one

 

[Bear22]

Duncans are known for this. I have had them close up for weeks at a time just to pop out and be open for months as if all is fine. (reasons unknown to me)