At 3am Sunday morning EST I cranked up my first watercooled system!!! I am so stoked... Here is the setup:
Danger Den Maze3 1/2"
to 5/8" Tubing outside computer and the cooling tower
The distribution manifolds are made of 3/4" PVC to the 3 parallel heater cores...

Eheim 1250 pump....
Throughput: 2gpm (bucket/time testing method)
Coolent Temp: 27 C (input)
Cpu Temp. 33C
Ambient: 23 C
Fan: Rotron 235CFM.... however i have it turned down to just audible for these temp readings, it is way to loud at 235CFM
CPU: AMD 1800XP @ 1667Mhz, 1.8V, 133X12.5
All temps were taken after 3 hours of running SETI@home
Here is a picture of the top of the
cooling tower under construction:
EDIT: moved image to link...