leeway
Guest
Just completed first dive with new reg. Oceanic Aplpha 7 with PX2 1st stage. Halfway through the dive at 70' it started humming when I inhaled and kept doing so for the rest of the dive. Is this normal?
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include