If you have a poly tank under 3k you can set it on flat ground, or a gravel base. I use a sprinkler pump to transfer water as well as run the irrigation. It is a 1.5 hp wayne pump that pumps about 5k per hour. As long as the pump can handle the lift you would be ok but the stronger the pump the faster you can move water around. You can control the pumps using float switches and relays.