Looks like the no substrate method to me, less to go wrong that way , less stuff for mold to grow on I have always thought . That's alot like how I do it too, same principles anyway. I just have smaller tubs with 1 large clutch or 2 small clutches in each tub , I use Pvc and plastic mesh instead with about 1/2" of water underneath the pvc and I do it in a walk in room that's run by a big Helix system instead of an actual incubator.

Anthony McCain

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