I am having trouble figuring out the mega flow drain kit.

I guess it would be silent if it wasn't for the gurgeling. I am guessing somewhere there is something that I didn't adjust right.
What happens is the tower sort of fills up. Then it drains down. Once it's below the hole part it tends to suck in air and expel it in the form of big bubbles into the sump where the drain ends up.
Since the bubbles come down with a big swoosh they spray up and over the sump endangering the pristine water damage free state of my new snazzy stand.

While I could like with the swooshing and gurgeling, the overspray from the bubbles makes me pretty unhappy.

What am I doing wrong. Obviously swooshing and gurgeling would be not considered quiet or silent so what do I need to adjust to fix this?