Right.. I've had a dual loop setup for a while (well.. a while for me.. 3 months I think) always had some issues with it.. namely... too many kinks too small tubing (thin walled 1/2") bad routing for sli (1 maze 4 turned 90 degrees to the first to give the tubing a big loop to avoid kink) bog standard green coolant And finally, most importantly the 2nd pump was residing in my 3.5" bays leaving me room for only 1 hdd which was half full and also we just moved to a digital camera so I wanted some backup options be them RAID/dantz etc. So.. I'm finished.. its done, here are some pics of my exploits! Before: (see little yellow cable ties holding up all the kinks?) disassembly and reveal of trade secrets for tidy wiring! Next the 120.1 that has air sucked over it.. this is 3 months of dust in a non smoking household! (plenty of talc around with the baby though) needless to say the filter has gone back in.. stuff the noise!