Does anyone know how to quiet the air tube that goes into the bubble diffuser? Every 30 seconds or so, it gets a big air bubble going into the diffuser and makes a loud gurgle. Like if you were to put a glass upside down in water and then turned the glass over to release the air pocket that was in the glass. This is the type of annoying noise I have just recently experienced. I have taken the pump off and cleaned and inspected the needle wheel all seems to be ok.
Thanks,
John
Thanks,
John