The CPR is just the skimmer and yes and no to the rock. Some of it is in a bin in my garage in water and being skimmed and the rest of the rock that doesn't fit is in a box. This is why I asked if your tank had been cycled already. A buddy of mine once gave me some rock that is in my current tank that had sat outside his apartment in an empty container and I simply boiled it in a big pot and then cycled it in my current tank. The rock cycled just fine and is encrusted with corralline algae. Nothing bad happens to the rock if it is exposed to air other than any type of hitchhikers dying off.