Skimmer producing bubbles in sump

[jpeconsult]

I have recently added a skimmer (ASM Mini) to a 70g total system. The skimmer is submerged in the one-chmaber sump which includes a pre-filter micron bag/sock and calaurpa. After adding the skimmer, I have noticed few bubbles lingering at the surface attached around the skimmer. Are these few bubbles a problem that should be delt with or should I not be concerned unless these bubbles get pumped back into the show tank?

[alan214]

They should be okay unless they make it to the display. You may want to consider adding some baffles to the sump at that point.