Scott,
I'm the last person to give advice on making a display attractive, after living by myself for the last few years I haven't really given a dern about what my setup looks like as long as the insides look ok, but I'm moving also with some roomates, so I'm doing a new stand and everything so my setup looks good and the new roomies can't complain
Anyhow. I used a top off setup from
www.autotopoff.com
They offer several setups with float switches and eitehr a pump or solenoid if you want to use an RO/DI. My water supply is two rooms away so that didn't work for me, I just stuck a bucket between the stand and wall and use the small pump to dose kalk. Works great for me for now. I also evaporate about 2-3 gallons a day, it is starting to show on my air vents also, rust and mold starting to show up, sure the landlord will love that when I move out
I like the solenoid idea, I'm hoping it will be feasible at my new place.