Hoping maybe to get some ideas here. So I have done a custom loop with my CPU and GPU being cooled. I experience a slow build up of microbubbles over time. For instance about 2 weeks ago I bleed the small amount of air from my system yet again. Got it back to no bubbles running through the lines. Fast forward to now and I have a system full of microbubbles. I have not leaks anywhere and have double and triple checked my fittings and connections. I dont understand why they keep coming back and its really getting on my nerves...… Has anyone dealt with this before? Offer some advice?