Hey fit I've just been on a google spree.
Seems pump placement really doesn't make much of a difference.
If it did.
My household water supplies wouldn't work, my pumps are in the actic, and so are the reservoir heh.
Its on a bigger scale but if it works in houses it will work on a small scale too.
all of my searching for pc based water cooling was only people saying, yet it seems no one bothers to even try.
It could be one of these myths that stem from nowhere.
Elaboration!
After all its not as if the water will just stop is it?
Its got a constant pressure behind it!