What is this in my gpu block?

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27 Apr 2018
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Spotted this in my gpu block yesterday. Not sure what it is?

Loop has been running mayhems pastel colours for the last 3 years or so. Has been flushed twice in that period with deionised water, and drained and refilled maybe 6 or 7 times.

Edit: The block is a Heatkiller IV GTX1080TI

GPU-Block.png

GPU-Block-2.png



Thanks All
 
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Should I be concerned? Never seen this before. Any risk of loop failure / damage to the loop?

Not unless you're seeing flaking or other similar damage which might see bits float off and get caught in a jet plate/fins or worse, your pump. I assume you don't have anything in your loop which would cause you galvanic corrosion issues?
 
Not unless you're seeing flaking or other similar damage which might see bits float off and get caught in a jet plate/fins or worse, your pump. I assume you don't have anything in your loop which would cause you galvanic corrosion issues?[/QUOTE
Not seen anything amiss aside from the obvious on the gpu block, drained it yesterday and nothing out of the ordinary. I have always run mayhems pastel coolant in my loop. Nothing else, apart from flushes with distilled water.
 
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