@PhunkyPhallus, My new grow which hasn't been posted yet has a lot of different cover crops. Yarrow, basil, red/white clover, nettles and borage. Yarrow and nettles are for allelopathy, clover is for nitrogen fixing, and the others are for chop n' drop mulch. My previous Earthbox grows just used the mulch covers.
My soil is full of red wigglers, soil mites and springtails. I try to mimic nature as much as possible and use a microscope to check soil microbiology a few times every grow. This will be my third grow in the same soil, but I'm probably going to have to change it out after 4 or 5 as the worm castings start taking over and you end up with what is basically a worm bin after awhile.
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