I have my Aquatube positioned at the top of my case with an Aquajet installed in the middle position. The water comes up to just below the top to of the Aquajet. It seems like my pump is louder (due to air getting stuck in the pump) with the Aquatube / Aquajet combo when compared to the Bayres that I had installed previouslly. I'm using a CSP-MAG btw. The only main difference in my loop is the res. Have any of you seen or heard of this or have any other recommendations. I'm thinking of trying to run it without the Aquajet to see what happens. Thanks in advance.