pump air bubbles

[Guest bill33]

the water level is perfect and every 5-8 seconds it shoots out a few micro bubbles. its the jbj dx. kinda weird cause there is no way air is getting in the pump.

[Guest Moa]

cavitation? maybe the pump prop is a little uneven?

perhaps at the elbow where the pump connects to the bulkead there is a small leak?

i hate those microbubbles. . . .

Joe