At the time of that pic I had a dangerden res att he very top mounted with the cap through the case to the outside for filling.
Here is a pic of my full system running though it is kinda dark.
http://forums.gideontech.com/vps/sho...papass=&sort=1
It cracked
Now I have tubing run out that hole to a 5 gallon tank outside the case and I usually have some bubbles trapped at the top of the tubing there.
But my temps have not been effected and I am designing a new setup for the new computer I am building a little at a time so this setup will eventually get revamped to be used in a server cabinet rack mount rig.
And yes I do plan to use copper tubing again in this new setup. I like the leak proofnss of it and the minimal amount of extra cooling it may or may not provide.