I don't have much experience, but I've watched probably 20 videos. Your old roots will die...they have to. new roots take a minimum of 4 months to start. Feeding with kelpmax helps. You shouldn't do it when it is in flower or trying to put up a flower spike. New growth wont happen as the plant is trying to keep the flower alive. If your old roots are dying off you can clip off all that are bad. S/H is a slow switch.