My waterloop sounds like there's air in it. Every few seconds you can hear the sound of water moving. I looked closely at the loop but don't see any bubbles. Is there anything I should worry about?
Don't just wiggle it. Actually tip it onto it side or front, whichever way will make the air get to the outlet of your res. I have my rad mounted vertical with my barbs on the bottom so air gets trapped in it easily. I actually turn my whole rig upside down when bleeding it. I run it that way for a couple of minutes and then flip it back right side up.