I've been using a harbor freight ultrasonic cleaner to "speed steep" my juice for forever.
The one I have does like 400ish second cycles and it has a heater. I pretty much just drop a few bottles in and keep running the cycle until I get tired of listening to it.
It works pretty well. My ADV is a light tan color when it's fresh and when it's ready to vape it's reddish. So I go by the color. I've been mixing the same juice for well over a year so I can tell when it's "done"
