i have been trying to think of ways to do this easy. I would buy a water pump and do it too, that might be easy, but then, you have to worry about refilling it. 18 gallons is alot of water to move. I just take alook at 5 gallon water jugs and they are huge and then i just picture myself doing 4 trips of that, that is alot of water haha. and then to refill it, yeah, alot of work again and alot of heavy lifting. I was even debatingon doing a little bit of ghetto plumbing in my kitchen since the sink is like 15 feet from the tank, probably less lol