This is my homemade water cooling setup. The first time I've used water cooling as well to be honest.
Holds a Q6600 stock at 24C and clocked @ 3.4ghz at 28C which is a few degrees above my room temp! 35C @ 3.4ghz under load or 38C under intel stress test. I'm happy with it so far! :)
http://img693.imageshack.us/img693/9500/55966168.th.jpg
Notice the storage tub as the resvoir, garden hos as 1/2" tubing. Also the pump is a garden pond pump. Cannot remembr the make but very high flow rate and very good build quality. Along with flow speed adjuster.
http://img693.imageshack.us/img693/9062/32898677.th.jpg
A Vauxhall Tigra car radiator as the rad. 2 120mm fans (on panoflow, one delta) and hose connector cut and melted in with special plastic glue on th front water intake pipe.
http://img693.imageshack.us/img693/4471/21974069.th.jpg
The system fits tidily on my desks shelf and is powerd by a silverstone 1200W psu and a 500w generic psu (for rad fans and n/b fan)
http://img693.imageshack.us/img693/619/78214891.th.jpg
The hose connected to swifttech block with petfe tape and ring clamps.
Despit the gehttoness there have been no leaks so far and has ben really reliable. Cost about £100 to make :)