Originally Posted by Snaporz
Question regarding the EK-Res X3 250. I was thinking of using 2 of them side by side in 1 loop just to fill up some space in the case. Now the manual says I can't use port 6 at the top as an inlet... However, I want to. Does that actually hamper performance of the res in some way?
There is no technical reason why you "can not" you can actually use it.
but from their design point of view, the top inlet was "dedicated" for re-fills
but you can always use any of the other ports for the same purpose to re-fill your res, so it's really up to you.
The other reason is the "air bubbles" when you let water drop from the top hitting the water at the mid / bottom, it causes bubbles, just like when you pee in the toilet
so people say bubbles are not good for you as that makes noise and reduces cooling performance as the bubbles inside the loop takes space away from the water cooling surfaces.
but for that you can always use the EK insert, or the EK foam (included?) to prevent the bubbling. well technically those 2 are supposed to stop the Tornado inside the cylinder, which also causes bubbles, just like when you flush the toilet, and all that circling water goes down the drain chucking down water and air.