Never even thought the tubes would fit in that small space. Then again, mine are 13mm TPV and too rigid. I didn’t think they would fit when I was installing it.Here are some close up shots. As you can see, I routed the tubes under the psu, 1 to the left of the plugs, 1 to the right, and then squeezed between the psu and front of the case. This way there’s only 2 bends and easy to place and remove.
Tubing I used was: Tygon R3400 - 8MM ID - 11.2MM OD - Black
Very nice looking. Good job man!