Trachtophyllia not opening up.

I bought a trachtophyllia yesterday and I put it in my tank and it inflated all the way. But I did not like where it was so I moved it to the right half of my tank. It is on the sand bed. I just woke up and just turned the lights on and it's not fully inflated. The last spot had so .We turbulent flow but in his current spot now there is very little flow.