Holy bubbling holding tanks!

No, we're not talking the latest OT flame war on rec boats, but a device called
a Sweettank that pumps air through the contents of a holding tank to oxygenate
the contents and kill off the anaerobic (stinky) bacteria. Built by Groco.

Looks like a simple, and likely effective idea.

Anybody use one yet?

Any opinion, Peggie?