[Kal-EL]

I never tried the alcohol route as others have tried but I reckon if you've got enough of it, you can fill the entire loop with the alc.

Finding the right mix of Anti-freeze and water for your coldest temps vs flow rate is tricky, I went by experimentation but didn't document the final ratio. How cold is the coldest your chiller will take you so far?

[ny_driver]

I don't know......from what I've read, with proper insulation I could hope for -20-30c loaded.

..............So I can have water in there then...and I have enough alcohol to fill half or more of the loop. So I guess it will become a mostly alcohol coolant solution for now.