After 4 years running my watercooling setup, I finally get a chance to take apart my loop completely. I figured something was wrong when my overclocked Q6600 hit 75*C under load.
Here is what I found when I took the block apart.[WARNING: The following pictures are disgusting.]
Not sure about the cause. Galvanic corrosion?
Coolants & Additives used:
Distilled Water + Pentosin (used for as long as I can remember, purged every 2 months)
Petras Nuke (copper sulfate) just a few drops
Primochill Red Dyebomb
The stuff you see is actually SOLID. They look like mineral deposits.
You can see whatever metal the metal top of the block was made of (Aluminum?) slowly got eaten through. You can see cavities created in the pictures.
The copper was badly tarnished, but no problem, some of that blue toilet cleaner gel and a toothbrush got rid of all that scaly gunk and brought it back to its copper shine (unpictured).
Note the toilet cleaner (Hydrogen Chloride) reacts with the Aluminum metal top of the block, so I didn't use it on anything non-copper.
I really hope my radiators are ok... it should be copper / brass on the inside so no worries right?
Now here is the thing, If I add enough radiator additive (with anti-corrosion properties) it should slow down the process right?
I'm on a tight budget, not wanting to spend on another block just yet... your input will beappreciated!