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Unread 02-21-2005, 08:49 PM   #4
JWFokker
Cooling Savant
 
Join Date: May 2004
Location: Kingston, NY
Posts: 269
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Oh, definitely corrosion. No matter what, you cannot run just water in your loop. You NEED a small amount of antifreeze or other corrosion inhibiter. Your waterblock was probably covered in black crap within a couple weeks.
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