Originally Posted by cam51037
I'll think about both of those suggestions. I thought though the pump is supposed to be at the lowest point of the loop? Or is that something else? (other than the drainage point of course)
Also, what is the plasticizer problem?
Some tubing is made with what's called plasticizers, which will get caught in the flowing liquid, and get caught in your waterblocks leading to gunking. Basically, in a PC watercooling loop plasticizers are a huge NOPE
Originally Posted by sakerfalcon Pump location doesn't matter
as long as there's a reservoir above it somewhere.
Ideally you want the pump at the lowest point in your loop, alone with a reservoir directly above it, as that will result in the best possible performance of the pump. Mind you, most people just go for the best pump, and have relatively small cooling loops so in reality you don't need that ideal placement because you can get the exact same results without optimizing the positions.
Again, for "optimal pump performance" have it at the lowest point in the loop, with a reservoir directly above it, however that's not necessary.