Actually, this is how they looked when I got them from the LFS. At first I placed them about 5 inches higher and they didn't open much, so I moved them lower and they seem happier.
I have t-5 lighting. And, as you can see with the pink zoas in the pic, there's still plenty of light at the bottom.
Maybe where they originally came from (prior to my LFS) they were in low light conditions?