Recirculation is possible with Osma but not at all recommended, officially or by me. If I saw Osma and thought it was a recirculation system, I'd be weirded/gro

Recirculation is possible with Osma but not at all recommended, officially or by me. If I saw Osma and thought it was a recirculation system, I'd be weirded/grossed out, too. I'm not sure what a vibratory pump is, but acoustic cavitation is the same kind of action you can use to clean silver or wash clothes. Millions of tiny bubbles. Try a Google search for "acoustic cavitation cleaner".