Tried to put in a few links a few minutes ago, but these work machines are not quite up to the task sometimes. So, I tried a reboot.
Look in the sticky here for a bunch of worthwhile reading.
http://www.overclock.net/water-cooling/
Another excellent source of info is this watercooling sub-forum in the cooling section. Like the name says, there is some real extreme stuff in the other subs.
http://www.xtremesystems.org/forums/...splay.php?f=70
Haven't tried any yet myself, but have been reading up on it for a bit, very interesting.