ok so I top off the old fashioned way with water cooler containers(of course RO water)and I do this daily and manually.This works up till now,and in the past when we went away we had someone sit the tank.In a few weeks we will be going away for a few days-I can go away for 2 days without worry but 3 and the tank is pumping air and well you know what happens next..anyhow, what I'd really like to do is make something that would top off automatically.And but heres the catch-I dont have the option of running a water line from my ro unit to the tank.Any help would be appreciated and pics and links would be terrific..thanks in advance