bubbles in my red sea max

[freezetyle]

I dont have any experience with the RSM so i am not sure what the back chambers look like. My guess in that they are coming from the skimmer.

After i added my skimmer to my biocube i was getting them for a bit. The problem got fixed my adding a sponge(be sure to clean it regularly) near the outtake to help slow the movement allowing them to reach the surface in the back compartment and not the display.