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Distilled water is less conductive than tap water, and it doesn't leave mineral deposits when it dries. It doesn't really corrode metal, although you shouldn't have aluminum and copper pieces in the same loop.
 

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Doesn't have minerals in it like tap water
 

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Distilled water contains significantly fewer minerals. If memory serves, water itself does not conduct electricity all that well, it's the minerals in the water that does.

This being said, if your loop leaks, it's still probably going to screw some stuff up.
 

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Distilled water has essentially no impurities, so theoretically nonconductive. So, it won't deposit junk in your loop, and it probably won't kill stuff if your loop leaks. It is also much more effective at transferring heat than most other fluids you might put in your loop. I think only Feser(?) has fluid that's better than pure distilled water, as far as temps go.
 

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Distilled water contains less minerals than does tap water and thus is better for using in a watercooling loop. Since it has less minerals it is therefore less conductive than tap water. No, distilled water will not corode a loop. However, if you have mixed metals in your loop (ie. aluminum & cooper) then you will need to add an anti-corrosive to the loop in order to prevent galvanic corrosion.
 

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Quote:


Originally Posted by -javier-
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noob question, in what ways is distilled water good? will it corrode metal?

Specific heat capacity
Thermal conductance
Viscosity
Unlikely to react with or degrade components
List list goes on...
and on...

Distilled water is, without question, the best cooling fluid you can use in a liquid cooled PC.

If you mix copper and aluminum parts, you can add a corrosion inhibitor to it to block corrosion effects.

You'll also need to add a biocide or a silver kill coil to it to prevent microbial growth.

Don't use dyes. Don't get sucked into that trap. They'll cause you nothing but trouble.

Water wetters are hardly worth it.

My advice: Use all copper parts, stick to straight water with a little bit of PT Nuke as biocide and you'll have the best cooling fluid you could ever hope for.
 
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