Closed loop causing many micro bubbles

[Son Of Skyline]

Originally Posted by One_Divided

The only I have noticed is that the pump is slightly leaky around the seal.. I tightened the screws, but it still leaks a little.. maybe it is sucking a bit of air in through the pump? I guess I will silicon around it and see if that solves anything..

That's gotta be it. If the closed loop isn't drawing air straight from the intake (sucking sound) then it's gotta be a leak somewhere. The air's gotta come from somewhere.

Good luck!