Looks like the Mp10 is actually forcing them. I no longer have a skimmer in my tank so I know that's not it. Maybe from the return but those are on the surface only. I'm not seeing the Mp10 pulling anything from the surface, at all.
Turn things off one at a time to confirm/isolate the culprit. If you figure out for sure it is the mp-10, try different settings and intensities to see if it improves.
Well I turned it off and a bunch of bubbles came out from the inside of it....so Chort I'm thinking your right that there was air trapped inside. Let me hope this took care of it.