Looking at the pics again, it looks like your routing is wrong. The liquid should flow in this order:
Reservoir->Pump->Radiator->CPU->other blocks VGA, chipset, etc->reservoir
Judging by the "out" on the reservoir, which you have going to the pump then to the CPU, your system is not as efficient as it could be. You want the pump to be before the radiator and the radiator to be before the item being cooled. That way any heat the pump dumps to the fluid is removed by the radiator before being passed o to what you're trying to cool.
