DIY Compost Tea Brewer

Dan over at Plant Abundance just posted this video. He showcases the construction of this plan from OSU (also linked in his video description). Neat little rig. Worth a share; but it also got me thinking. Has anyone experimented with windmills to power something like this? Obviously you need quite a bit of air pressure to force bubbles up through that much water. Food for thought...

They make these for pumping air into ponds https://www.pondaeration.com/ I would imagine the smallest windmill they make might work.

I found in another thread that vortex brewers are better than the ones with fish tank pumps (I could imagine that the bubbler stone gets slightly yucky over time).
I found some instructions and would like to know which one is the best for the job (and probably to clean, I guess I have to clean it?)?
Brewer 1
brewer2
brewer3
brewer 4
they look all very similar but the devil is probably in the detail.
HOw much electricity do these pumps need? And which pumps are of quality and last a bit longer?

I found a very good article about brewing compost tea: soiland health