Originally Posted by Imprezzion
Have you tried getting it replaced by NZXT? If you have proof the extensions we're faulty..
But still guys, is it safe to use CLU (Liquid Ultra) on the block? Still have some left and it worked wonders on my H100i's temps..
So far as I known the block is copper. But if you are worried and want to be 100% sure PM Bryan (BRAMSLI), the swiftech representative which usually is around.