Protein skimmer acting up

[smiller8516]

My octo skimmer 150-s has seemingly stopped producing bubbles. I have unplugged it, plugged it back in, cleaned it up and I can’t seem to figure out why and the manual isn’t exactly helpful. Any input would be great! Started like 2 days ago

 

[Arkayology]

I would check to see if the air line is clogged.

 

[jlitz]

I would check to see if the air line is clogged.

This. Could try flushing some ro water or even vinegar down the air line. If that doesn’t work, try cleaning the pump using pump clean.