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Why does distilled water go bad?

post #1 of 22
Thread Starter 
Well i maintained my watercooling loop and had drained and refilled it. I noticed that the old water within my system had a funky smell to it. Why is this? Also i noticed a noticeable drop in temps with the new water in my system. I just want to know how distilled water can go bad since i'm curious.
 
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post #2 of 22
It could just be from the water blocks etc. Distilled water isn't totally free of contaminants either.
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post #3 of 22
Quote:
Originally Posted by Joining;13328237 
Well i maintained my watercooling loop and had drained and refilled it. I noticed that the old water within my system had a funky smell to it. Why is this? Also i noticed a noticeable drop in temps with the new water in my system. I just want to know how distilled water can go bad since i'm curious.

Sounds like you had something growing in it.

Essentially, what happens is over time your water picks up dust, little bits of metal from the blocks and rads and becomes less pure.

Then things can start living in it, because it's a lovely warm environment and then your pipes turn creamy greenish white (my own personal experience).


Were you using biocide or a Kill coil in there btw?
    
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post #4 of 22
Thread Starter 
Kill coil. Nothing else. I think i had some residue of pc ice in there but that was from like a year ago.
 
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post #5 of 22
opps, sounds like I better flush out my loop this summer for sure. Hasn't had a fresh drink since this aug '10

:O
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post #6 of 22
I think lower quality tubing leave a strange smell on water over time if your temps are high.
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post #7 of 22
Pure water (or pure anything) doesn't stay pure for long. Leaching ions from tubing and blocks, along with dust and oils left on barbs etc can all add up to some pretty funky stuff running around your loop.
Remember that water qualifies as a solvent in some circumstances, it can dissolve all kinds of stuff, especially when warm and given plenty of contact.
Even with the kill coil to keep biological contaminants under control, you still have chemical reactions going on. Sure, the purer the water the less reactions there are, but they still happen.
This is why draining and refilling every few months is advised.
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post #8 of 22
Thread Starter 
Eh i think there might be some crap in my waterblocks. I'm using feser tubing which i doubt is the source of the smell.
 
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post #9 of 22
Because... 'It's alive!'
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post #10 of 22
Did you touch your barbs with your skin at any point? Did you rinse out your tubing and blocks/rads before installing? I doubt your loop can qualify as completely clean if you didn't install it in a clean room.
Mine certainly isn't that clean, so I expect to drain and refill every few months.
And I'd expect even feser tubing can have some chemicals slowly leach out of it over time, I don't know of any tubing you can buy for under $1,000 an inch that's completely non-reactive.
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