I recently got an aquamaxxx hob 1 and the bubbles are making a very loud gargling noise. Similar to if you were to blow onto chocolate milk with a straw. I cleaned everything and made sure all my screws are tight. The tube is connected to the right opening on the silencer. If I cover the tube/silencer, the noise goes away and so do the bubbles which defeats the purpose of the skimmer..
Any tips?
Here's a quick video
https://youtu.be/PpKT4BKXctA