Originally Posted by razaron
I'm going to start WCing soon. Some of the parts are here, and the others will be arriving over the next 2 weeks. When flushing the radiators, should I flush the CPU/GPU blocks as well, and, is it okay to use ordinary hot tap water?
Not sure but if you do flush with tap water, I'd then rinse through once with distilled water. If you buy ordinary de-ionised water from a local garage you'll see it's dirt cheap. Point of avoiding tap water is the impurities in it as well as it's potential to corrode.
And with your loop, make sure you make a drain point low down in it.