My setup uses an z4(shut up
) and have changed the tubing/setup several times. Ive only gotten the white residue a few times, maybe 2 outta the 4 times ive done it. I use distilled water from the store. Ive gotten all the vinyl hoses from home depot. The only thing in common is the fact that ive blown through the hoses prior to install(to mess with my girl's cats).
Methinks the water might be getting contaminated by oil on the hands or some biological means.
Its just a theory......