I forgot to add. I start out in usually fox farm soils or some kinda soil with nutrition ready to go. I’ll allow plants to use that up before starting bottle nutes. Usually about 2 or 3 weeks. It depends on strain some devour nutes while some are pretty sensitive. Honestly you’ll likely have to experiment a bit with the strain you have to get it dialed in. I uselly need atleast 2 runs to get it figured out, don’t get discouraged if it don’t go well first run.