Originally Posted by
Martinm210
My vote goes for Walmart $0.89/gallon distilled water and a couple of drops of PTnuke.
While nanofluid seems to have some promise on really low flow rate type system, it's too much hassle in my opinion and hasn't been long term tested to completely understand what if any side effect/wear issues may be associated to that. Unless you're reaching boiling or freezing points of water temp which don't apply to water cooling, ethelyne glycol or any of the glycol based coolants/dyes don't do anything but hurt thermal performance and work as a biocide.
There are only two basic values that define a liquids thermal performance. Specific heat value and thermal conductivity, we happen to be gifted with the fact that water is about as good as it gets in these two areas. Everything else is simply a means to provide aesthetics, corrosion prevention, or algae prevent. Until a product starts advertising a specific heat value and thermal conductivity value that is higher than that of water, it's marketing BS.
Running a copper/brass only loop, you need not worry about corrosion. Algae yes, but two drops of PTnuke or a stick of silver in the reservoir will suffice that need. Or run solid black tubing to prevent "Light" from contacting the fluid.
There's really not anything out there that economical AND practical to use in water cooling that cools better than plain distilled water. Oh and forget about the marketing BS about non-conductive. Unless you live in a 100% sterile dust free environment which nobody does, any fluid you spill on your precious motherboard will become conductive.
Save your $$ and buy cheap distilled water is my suggestion. Add some biocide like PTnuke. DON'T mix metals in the loop (avoid aluminum like the plague), and use UV tubing if you want bling and you'll avoid becoming one of the many "Look at this gunk in my block" thread starters...
My 2c