Skimmer micro bubbles

[1bigfish]

I bought the new eshopps x 160 skimmer. My tank is still cycling, no skim mate coming out using the skimmer, thought there would be something.
It's been running for 3 days and constantly fills my display tank with micro bubbles.
Skimmer Level is at 7" in the sump, higher or lower doesn't change the micro bubbles, tried adjusting the skim to be more dry or wet and still microbubbles.
Does the skimmer still need to break in?
Anyone have any experience with this skimmer?
Any suggestions to get rid of the micro bubbles?
Thanks