Wait, but that’s what I’m asking. Why are bubbles at the pump not okay? Don’t I want no air at all the other end for ideal cooling?

Edit: I misunderstood this entire setup. Disregard me, thank you for your efforts to explain stuff to sleep deprived me.

I have, it doesn’t, but thank you.

I know very little about these things (why do I need pretty lights in my computer? My GPU has a big, useless white light that I wish I could turn off) but one thing I THINK I know is that that’s installed the wrong way around, no? Shouldn’t the pump be on top? So that any air bubbles don’t gather at whatever you’re cooling?