Here is my first go around. All water cooling parts are EK brand. Motherboard is an Asus X99-A II. CPU is an i7-5820K overclocked 21% to 4.0 GHz. GPU is a GeForce GTX 1070 FE. The 120 Rad is for cooling the GPU before the fluid enters the CPU water block. The fan on the 120 Rad is powered by the PWM fan connector on the 1070 GPU. Coolant than travels down to the case pedestal where the 360 rad is located. After being cooled, fluid is returned uphill to the bottom of the reservoir.System works quite well. Idle temps are in the low 20's. I added the EK 3mm ultra white LED's to the CPU monoblock and the GPU water block. Additionally, in the bottom of the reservoir, I installed the EK Plexiglas plugs to facilitate the installation of EK 5mm ultra white LED's. The system drain is located on the bottom radiator port where a T fitting is used to add the fluid return line that runs to the reservoir. This system relies on gravity and system pressure to bring fluid back to the reservoir. Will soon be lighting the pump also. I'm currently running to bleed out all the air bubbles. Enjoy.