12v aerator/circulator for compost tea brewing?

Does anyone know of a product or solution that will aerate 55 gallons of compost tea while drawing minimal power from a 12v source?

I'm searching for "bait aerators" (for keeping live fishing bait) right now but haven't come across one that seems powerful enough. Also bait aerators produce lots of tiny bubbles. I've found that compost tea likes big bubbles, so "SCOBY" strands can form.

This is for brewing tea in remote locations with no AC power where hauling in brewed tea would be back-breaking.

Thanks!