Changing rock - does it affect much?

All,
I want to move a few rocks around in the tank (shift them 2 inches).  Does this affect other things in the tank at all I don't disrupt flow or take the rocks out of the water?  How sensative are corals to vibration from being moved?
Tank:  29gal BioCube.  Zoas and other softies besides 2 frogspawns.
-Justin

 

moved around a couple rocks with corals on them (glues stuff since my hermit crabs like to "rumble and tumble" at night. Everything looks great at this point. I was moving rocks around to make it easier to clean and get to the corners of the tank...that and Williamh gave me some Zoas frags that looks great (even under my crappy PC lights).

Thanks for the inputs. I wanted to make sure everything was ok. I did this a bit right after I had corals in the tank and it seemed like the corals didn't like it, but it may have been due to them still settling into a tank that was going through a mini-cycle after adding corals.

-Justin