Cardboard looks out of place IMO. Get a cheap Chinese ATX unit, yank the cover off, cut to size then spray it black. £10~£15 & much better.
It looks OK but as above The_Protocol's suggestion would look better.
Just so you know parralel loops are not always recommended as the water does not move around very much compared to series.
I have drawn up a rough idea of how your loop should/could look. Literally 2 minutes on ms paint
Here is a link regarding the differences between series and parrallel loops for gpus too
[media]http://www.youtube.com/watch?v=3Wj7B6FvDV4[/media]
That one guy in the video talking about parallel set up doesnt even have it hooked up correctly,the in & out need to be on same card.
nice tidy cover..
have you tried the "not bouncing back and forth" method?
you got an ace for the machine, but the hose routing really
degrades it, dude. it should be done in half the hose you
have there. i doubt your appz would notice a 1°-3° increase
if thats what would happen.
airdeano