So I am observing some light galvanized corrosion in my loop. Expect what confuses me is that all the blocks are nickel plated copper. Only the Fittings and Radiator are Brass. Neither of which shows any signs of corrosion. So I'm really confused of what causing it though it seems the worse on the block connected the radiator which has the nickel partly stripped and turning green. I took the loop completely apart and cleaned all the blocks, the CPU block had a nasty big green goop all in it. After I cleaned it the block still has all the nickel plating on it unlike the other blocks. Other the replacing the fittings and Radiator I'm not sure what to do.
Anyone come across this before?