Yeah, aggree with that. I use brass barbs on my AL blocks and it does cause that battery effect slightly, if I where to use the blocks for a longer period of time I would use nylon barbs, but i am always changing them out. The biggest problem I get with AL blocks is the growth that accures, the white slime that is. That can drastically be reduced by using distilled water and watter wetter though. I lost my intrest in high performance cooling otherwise I may pay the extra for better tooling and go with copper (to gain a degree cooler temp) but now I am more into quite cooling. My computers are way faster than they need to be anyway. If it wasn't for SETI I would still be using Duron 600's @ 900+.
I don't know if I am just getting old (25 lol) or just practicle but I lossing interest in trying to make my computer faster. Everytime I get my CPU faster they come out with a faster CPU. Just seems like a waste of time anymore. I do however have the need for quite as I am slowly building my SETI farm and when you have 3 highspeed aircoolers (soon to be more) is gets rather loud.