Aquasafe RO/DI?

[Arok3000]

Like was mentioned, use a buttload of teflon tape on the fittings.
I snapped 2 fittings in the process because I tried to skimp on the tape, and my only issue with the fittings is they use metric fittings, wich aren't so readily available at your local hardware store.

Other than the fact that I am only using 2 DI stages because I snapped those fittings, I have been reading 0 TDS for 3 months now since I installed it.