Hmm. That could work. One thought though, This would need to be built of plywood and the KT will definitely try to colonize the box itself. I am a little worried about it absorbing the chemicals in the plywood glue.
I could build the boxes out of 2x4s instead, but for the scale I am looking at it would get expensive rather quick.
I was toying with the following idea:
- Building a 20'x30'x10' frame out of 2"x4"s.
- The ceiling would have braces running in the 20' direction with a spacing of about 18".
- Line the walls with 4 mil black plastic and the ceiling with 4 mil clear plastic.
- Add a cheap door at one end by sewing a long zipper into the black plastic.
- Cut out some large squares from the black plastic and make some tyvek patches to cover the square holes for gas exchange.
- Make substrate logs by filling substrate and spawn into 10' lengths of 10" diameter 4 mil plastic air ducting.
- Running down the center of each substrate log would be cardboard gift wrap tubes filled with moist pasteurized vermiculite to work as a moisture reservoir.
- The substrate logs would be hung from each of the ceiling rafters with a spacing along the 20' direction of about 3' with 8" spacing from the walls.
- the moisture reservoir would be allowed to drain at the bottom and have automated watering at the top. Watering would start a week after full colonization.
I could put 120 substrate logs in such a room. We would probably run 2-3 flushes of each log then use the spent substrate as compost for the garden. The substrate would primarily be wood chips with some straw mixed in.
I am going to test the moister reservoir idea with a couple of shorter logs in my closet in about a few weeks. To warm in there for the King Trumpets to fruit, so I will probably be running that test with Pearl Oysters.