airbubbles from wavebox

[sweetpea355]

I'm getting alot of air bubbles from my wavebox, If the box was turned off where should the blueline sit at in the water or how far below the water line?

 

[rvitko]

The blue line is the water line. Microbubbles would indicate a new unit with air still in the pump or the sponge is over the intake or too long of a pulse interval.