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SOLVED 4" X 4" radiator

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I recently ordered a 4" X 4" radiator from Cool-Computer and found some corrosion on the fittings and inside the tube connections. I had not installed the radiator yet, and am leary of installing it with all of this white, powdery residue from corrosion. I am also finding out that aluminum and copper don't work well together, even with Water Wetter. Should I return this radiator? Is this corrosion something to worry about? Thanks for your help.
If I were in your shoes, I would return it for a fresh radiator or get a copper one. While I have not used one, folks I trust have said the 4*4 is not a great performer.
corrosion is somthing to always worry about. Definitally return it. you never know what the insides may look like.
Thanks for your help. I have been looking real hard at the AquaCoil from BeCooling and this seals my decision. Thanks again...Mark