You can use rubbermaids as stated. However if there is going to be much exposure to the weather. And the weather aint very hospitible(cold,hot etc.) Then i would recomend usind ice chests. For the fish and the rock. Dont put the fish in the same conainer, whichever way you go, with the rock. There will be a lot of sloshing around and fish will get slammed up against the rock. Drill a couple small holes in the top of the cooler with the fish. This will let it breath. If it's going to be a very long time between tear down and set up, use a heater in the containers with the rock and fish. No need really for a powerhead when transporting the containers. Again, unless its a long time. Your gonna slosh them around quite a bit. If your just going to be a few hours or so, you could if you wanted, bag the fish and put them in a styrofoam cooler.
