OHHHH...I wish I could find some nice 50mm (2") acrilic tube without out buying a meter of the stuff for $30. Anyway, it sure does look nice, those air traps are sweet. Here's Turbokeu's post on Pro/Forums
http://forums.procooling.com/vbb/sho...bokeu+Air+Trap That link should work, I know I checked it out a few weeks ago.
I think a nice little how to is in order on this fine piece of watercooling goodness.