The wood breathes surprisingly well..
Plus each layer had hard ware mesh so castings fell right thru to the bottom ..
Castings piled on bottom, Then air gap,
Then mesh, then layer of worms and beddings,
Then air gap, then mesh, then another layer, etc.
I rock a different style now but I actually liked it a lot, nice self contained unit with no smell, it was easy to manage
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For the record I don't advise cardboard anymore. But this was a good setup for my first run at organics..
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Now the worm farms jus sit under the bunny, open .. I leave one bin full of hay, and she pees in that one.. I just discard it outside in a non gardening compost pile
Whatever she doesn't eat just falls thru and feeds the worms
I keep a 4 inch layer of hay on top of the beds of worms just to slow down the evap. And let the worms surface feed.
Now I have double stacks of totes and each pair of totes is going on a wheeled cart for easier movin