2 pots means purchasing two ultrasonic cleaner pots that and removing their transducers to mount to a larger container. they would need to be wired together and one power supply can handle up to three of those transducers'
those pots are rather small, but the transucer can easily be removed and mounted on something else, to build something large enough for a rack of carbs you would need at least two, possibly three of them. or you could but a immersion transducer for $150-$200 and have something that can handle 10+gallons of liquid'
many other transducers will work but, will need to be propery wired, the pots will just plug right in though.. I've also seen someone remove the transducers from those pots (3 total) and mount them to the bottom of a stainless steel food service container