I'll see you that and raise you (and maybe get a bite from the
"hungry water" theory crowd).

when i had access to it, I would use 18 Mohm water in the cooling
system, just shy of HPLC grade  :)

alistair

On 7-May-10, at 8:04 AM, Jamie Fitterer wrote:

I use filtered RO water to cut my VW blue coolant with. It is not
Distilled but has a very low TDS reading and very clean. I have the
RO system running on my Reef Tank. If it is good enoughfor me corals
it should be good enough for me Van.