XBL-400 HOB filter blows continuous microbubbles only when surface skimmer/oil film attachment is installed — normal or air leak?

Name: XBL-400 HOB filter blows continuous microbubbles only when surface skimmer/oil film attachment is installed — normal or air leak?
Uploaded: 2026-05-26T15:07:56.480Z
Duration: 27 s
Description: Watch XBL-400 HOB filter blows continuous microbubbles only when surface skimmer/oil film attachment is installed — normal or air leak? on YouPounce