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Aerating grass/weed liquid fermented fertilizer

 
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Hi all, this is my first experiment with making liquid fertilizer from weed and grass clippings. I started this 3 days ago, with a 45l air pump aerating the brew, and the fermentation took off. The pics below show how active the fermentation was at 24 hours in, and now at 72 hours. Its fermentation activity is greatly reduced.

My question is how long do I leave an aerated liquid brew like this?? I can only find info on non-aerated brews, but I'm not sure how long I can keep an aerobic brew like this going. I'm concerned that the rate of fermentation is greatly increased, and I shouldn't let it brew for as long as I would in an anaerobic brew. Or does it matter cause it's constantly aerated???

Thanks!!! Happy gardening!

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24 hours in. Very active ferment
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72 hours in. Slowing down. How long do I brew??
 
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