So i just finished my first custom water loop with petg tubing, while filling up the system i had some troubles with the water not flowing anywhere because of trapped air, well i believe i got it working as the system is filled up fully now. But problem i got is, im using white pastel water and a distroplate, where the water returns back into the distro plate is low and i cant tell if the water is actually moving. The water seems to be still but maybe its moving and i just cant tell, is there anyway to tell? waiting for my flow meter to come in to throw that in but when using the pc i at idol i get about 37 degrees on my i9-9900k and i havent tested with it on load as im afraid its not being cooled properly. Is 37 degrees at idol normal for the i9-9900k? and is there any way to see if the water is flowing like it should?