No, I woulld not be concerned at all. I have a nice metallic gsp colony and it closed up for a week when i started to drip kalk. My thoughts on gsp is that it is sensitive to changes in water params. It is not uncommon for them to close up after a move like that, you can move them acrossed the tank and they wil stay closed up for days. Dont sweat it, i bet anything they are fine, its not easy to kill gsp.