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Re: [compost_tea] Re: micron vs. mesh - again



The largest beneficial nematodes are about 25 micrometers in width, but about 150  in length.

Fungal fuzzies can get up to 100 micrometers as well, so you want opening sizes around 200 micrometers. 

But working with Bruce Elliott, we've seen limitations in getting organisms through the 200 micrometer openings.  The openings get plugged with fine organic matter, so we've aimed for slightly higher opening sizes.  In the 300 to 400 micrometer size range.  You could just buy Bruce's compost tea bag.  It has been tested for optimal organisms movement through it, and works well in his brewers. 

So, somewhere between 200 and 400 micrometers opening sizes, depending on your compost. 

Hope this helps!

Elaine
President, Soil Foodweb Inc.
www.soilfoodweb.com

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