Sorry to inform you nitrogen is not a microbe are a microbial. If you would like a list to microbials there are about 45 different microbials. Mycorrhiza could be the most important nutrient for canabis. It contains over 45 microbials. Npk of course are essential to any garden. Live worm castings and bat guano and sea kelp are great also. But mycorrhiza is so important to it plants
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