Just so happens that my husband & his gun shooting buddies target practice with their 22lr target guns & they shoot at EGGS (@75 yards!!)...I can go pick up sun dried egg shells & maybe bake them in a hot oven to kill off any remaining bacteria. I should have enough in no time.make an omelet or scrambled eggs. leave the empty shells in the egg carton in the fridge. I have used a coffee grinder to powder the the eggshells after they have dried out in the fridge for a few days.
hth
My coconut coir should be waiting for me when I get back from the Florida Keys vacation thus week.
I will try to start a whole extra culture of white worms using the new media & see how it does.
Thanks for the suggestions