Polyethylene tubing?

[ridder]

You can try Skeans or New Line hose and fitting.

[fkshiu]

Thanks guys. Picked up a bunch at New Line along with some fittings. Running a line from the Aquasafe down from the kitchen to the basement where the tank is so I don't have to lug those 5 gallon pails anymore (a common activity if you're running a 100+ gallon tank).