I used Roots organic in my first grow and didn’t add any nutrients until many many weeks in. This time I went with 1ml each of part A and Part B per liter of water. But most of the time I am just using water with a PH of 6.5. I should mention that I was told my PH meter might be crap and so i have been using test solution and using the colorchart to get as close to 6.5 as I can.
I have not done a run off test yet. I have never watered these enough to to get run off. They haven’t been in these larger pots very long. Maybe I am a noob and should be soaking the soil more when I transplant?