I just started trying to reboot my compost heap after several years of doing exactly nothing with it. At one time it was working. I base this one the pile steaming in the winter when I turned it several years ago. Now it seems to do nothing. I have been tossing nitrogen and carbon on the pile and started turning it again. And watering it. But no discernible activity. And no earthworms. Did I kill all the micro organisms that do the composting? Do I need to get some kind of bacterial spore mixture to start it up? Thanks.