Protein skimmer caused micro bubbles, help

[Zaneazp7]

I just recently bought an ns-80 reef octopus protein skimmer which sounded like a pretty good one for its price but I noticed a bunch of microbubbles right as I turned it on. The instructions that came with it were horrible so I may have set it up wrong (I looked at the picture and matched it). I have also heard that they need to be broken in which could be the solution. I tried putting it into a different tank that has nothing in it other than the water from my tank but bubbles still remain in my current tank. Any sort of movement such as a rock moving brings out a bunch of bubbles everywhere. Is there any way I can get rid of them? Not to mention one of my fish just died after noticing there were bubbles all over it. Any help will be appreciated, thanks

 

[marsh]

Mine did that for a few weeks. Last time it was doing that the bubbles went away after a top-off

 

[foster53]

I get lots of bubbles in my tank after a WC, and refill. I believe it is co2 being injected into the tank with the refill water. It goes away after a few hrs. The bubbles do attach to the fish also.