Copper and Aluminum waterblocks Together?

[cmcquistion]

I've heard people say not to mix copper and aluminum waterblocks in the same setup. But why? I'm using a water additive called Purple Ice that is supposed to protect the system from whatever.

Is using a copper waterblock and several aluminum waterblocks really going to be a problem. I ask because I have made several aluminum waterblocks for the video card, northbridge, and hard drives.

Any hard data?

[Jester1]

should be fine as long as you use some kinda corosive additive as you said Purple ice :D