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DIY Compost Tea Brewer

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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...

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Location: Jackson, Michigan Zone 5
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They make these for pumping air into ponds https://www.pondaeration.com/ I would imagine the smallest windmill they make might work.
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Location: cool climate, Blue Mountains, Australia
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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
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
This cake looks terrible, but it tastes great! Now take a bite out of this tiny ad:
Switching from electric heat to a rocket mass heater reduces your carbon footprint as much as parking 7 cars
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