for ro I would try 1tsp of calmag and go from there. I change nothing from clone to harvest. I dropped the protekt. and kelp powder. Foliage pro and cal mag w/ minimal run off is all I need. if I do notice nute burn, I do a nice flush.Sorry I am late for the show. Things are looking great! Couple of questions for you if I can. You mentioned that you add a quarter tsp per gal of Cal Mag and the same of Foliage Pro from start to finish, starting with 100ppm water. I assume that is what's coming from your tap, right? What do you think you would do differently if using RO water with roughly 0ppm, which is what I have to start with. Also, from start to finish, meaning from clone to harvest? Nothing changes? Thanks in advance!