Or.... how about not locking my thread dude. Wow. :3eyes: Can we stop throwing personal slurs around like kids? Unsubstantiated arguments over the internet is like spitting into the wind. Im trying to gleam years of experience here from some of the guru3d water cooling pros - in one tiny thread . This is why these forums are so helpful. Thanks for all this pointers so far. I did originally look at the herbies but was concerned that they might just become brittle with ages and possibly cause a leak. Im taking some of these comments on board and they are quite helpful. Im going to incorporate my gtx 295 into the loop as when OC'd its fan sounds like a hoover. Ill get a custom block for that, should be well worth it now that i think about it as the 295 pushes out loads of heat. I'll stick to the 1/2" tubing and fittings for my first build, heating the ends of thinner tubing to get it on sounds awesome but i forsee lots of effort getting them off intact. Also, seems like distilled water and antifreeze is a better alternative to some of the marketed products. Ill look into the silver and anti algea stuff too. @PhatKat - when you say remember to get fittings does that mean i need some other items too? thanks again.