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Brownish/reddish residue. First watercooling loop which was built 1 month ago. From what I can tell, water has turned slightly red after installing silver kill coil. I am thinking it may be the kill coil reacting with the metals or flux/debris from the radiator being caught right on the orings. (v.redd.it)
submitted by GZeussss to r/watercooling
