Nuvo 16 Spitting Bubbles

[keithjfuller]

so, my mind is totally boggled. i have a nuvo 16 (no skimmer), and no matter what i do, the return pumps spits out tiny bubbles. i've even filled the water in the rear chamber to the top (like, seriously the top), just to see if the overflow was causing bubbles to get trapped, but it kept spitting bubbles. i see absolutely zero bubbles floating in the rear chamber, but they persist in the return pump.

how is this possible, because there are no air bubbles getting down there? i've had the tank for a couple of months, and it's really starting to drive me crazy. does anyone else have this problem or have any ideas?

here's a video i made showing the problem.

[keithjfuller]

MODERATORS: I moved this to a different section, so please delete this thread. Thanks.