Knf is more of a foilar program / soil conditioning. The inputs are mainly used or widely used by food growers as a foilar program as well as creating the imo process. Indigenous Microorganisms is the main part of it all. IMO 1-5. In the Cannabis World however there's lots of people experimenting and doing all sorts of wild stuff with great results. You shouldn't have to flush anything out if you have a fully functioning an operating soil food web in your no-till container usually 15 gallons or larger or straight up in the ground if outside. You typically want to stop spraying your plants after week 2. Have you checked out Chris Trump YouTube videos on Korean natural farming at all? Great videos be careful not to miss any small key details and to follow the instructions all the way if you ever want to play around with Korean natural farming. The cgnf hawaii website is also a great reference point