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Seems my webserver had crashed and is doing disc recovery atm. yikes...can't open the link..
I'm out of teh EKWB stuff to flush with and also out of distilled water now, so think this will have to be the final run. At first I actually saw black specks getting caught on the GPU fins, but those have flushed away now.I think it never stops there's always a very tiny amount when you drain.
It's not a concern anyway, those small flakes accumulate at a low, quiet spot of the loop, often on radiator end tanks, and don't cause any trouble.
When i started watercooling, that gunk was mostly gone after 6 months, at least all the large bits you first saw. They used to accumulate on waterblock fins, but after a while, there's only the finest left.
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