To be honest, if the water was still standing and you haven't touched it, added anything or taken away anything, I would wash it very thoroughly. put it in a black bag and put it in direct sunlight for a month. The rocks wont be Live Rocks any more but just from experience, your tank most likely has some new additions (algaes, water fleas, bugs, parasites,etc) that you most likely do not wish to deal with. I would start over from scratch and clean everything thoroughly with hot fresh water and sunlight.