Protein Skimmer is producing many micro bubbles and a 'frothy' sound in my tank

[Danp123]

Is this normal? I just set up my first skimmer yesterday and i'm new to saltwater tanks so don't have any prior experience of using a protein skimmer. I'll attach a video of the issue to see if that will help. The skimmer I have is a Tunze Comline 9004. I've heard that this skimmer is supposed to be silent? the tank is in my room so I need it to be as quiet as possible.

Thanks,

Dan.

 

[Danp123]

*UPDATE*
After leaving my skimmer on all night there are around half as many bubbles being produced. I'm guessing that it might just need to be 'broken in' before it functions optimally?

 

[jefra]

*UPDATE*
After leaving my skimmer on all night there are around half as many bubbles being produced. I'm guessing that it might just need to be 'broken in' before it functions optimally?

Yes, this is pretty standard for any new skimmer.