Nice thread!
I recently started a worm bin myself. I feed mine ground up crabshell, with some eggshell, azomite, and cormeal mixed in. I also add used coffe sometimes too. They seem to love it.
What are you using for grit?
The coffee used grounds are better than the corn meal! only manure is higher in nitrogen. They need some greens too to help balance the carbon to nitrogen ratio. Not a lot needed but a little thawed spinach in my bin every week or so. Just a handful.