Filling water tank without pressurized hook up

I bought a sureflow water pump wired a plug on the end of the wire, and plug it into a cigerate 12v in my truck. Then I bought white hoses and cut them the right length hooked them to the pump with one end in the water can and one screwed on the water inlet on my 5th wheel. Works great!! Just need a lot of whater cans or big 25 or 50 gal water cans. I strap them to the bed of my truck and go get water. pump it into the trailer