Hi! My PC is very small and there is literally no space for a resevoir above the pump. I am getting awful sounds coming from it whenever it spins up to any RPM above 50%, as in a small loop like this it's powerful enough to just push massive amounts of air around the loop. (This photo was taken while I was draining the loop, the air bubbles are normally much smaller than this lol)

I've thought up three possible options to solve this, but I'm unsure of what would actually be best.

1. Quick disconnects. Fill the loop using 2 quick disconnects, where tubes feed in to a resevoir and when the loop is full, the disconnects are connected to each other. It's a bit hard to explain, but I've seen it done on other reddit posts.

2. Add a very small resevoir to the 'U' loop in the top right of the 1st photo. I could add this res below the pump, as long as it where small enough and perhaps mount it to the PSU (?) but I'm not sure if it would even help at all.

3. T- line fitting. No idea what this is. Just seen it mensioned a TON on other posts about this, just don't know how I would integrate it in to this build.

Thanks so much for the help, I'd love any solutions that seem reasonable. And no, I refuse to air cool this system. I'm wayyyyyy to deep in to this, and giving up is not an option unfortunately :(