Hi there. Of the various things I’ve been trying this year I think LAB is likely the best single thing. The plants always seem to really like it. Good luck.
My plants absolutely love the barley SST that I’ve given them. I’m also going to be using barley malt as a top dressing to provide nutrients at the start of flowering. So, a bit of a hybrid of KNF and organic methods using barley.
Barley has a great nutrient profile for cannabis growing so it’s likely worth using along with the KNF methods.
Good luck.