Anyone have a Tunze 9004 DC? I bought this new for a small tank. It has an adjustable air line which I have dialed all the way open. The primary adjustment is the water level which is changed by moving it up and down in the water with magnetic attachments. I'm not even seeing bubbles no matter where i move it in the water column or where I dial the air line. I have opened up the case to look at the interior and it doesn't make any sense. The air line is just loose above the "foamer" which is just a pump.
Any thoughts?
Any thoughts?