So I've had my simmer off for the duration of my cycle. I clicked it on tonight to try and get it tuned up. It's a Skimz. So after I turned it on (to get bubbles at the base of the cup) it's spitting a lot of air bubbles into the main tank. It's only been on for about 5 minutes. Is this normal? Should I give it a few to see if it clears up?

