Dear friends, I am at a loss as to what to do. I don't understand what happened! From the start, when I connected the system, the reading was 200 ppm. It was tap water with a concentration of 100 ppm + 100 ppm CAL-MAG.
Then, I added an extra fertilizer 100 ppm, and it read 300 ppm total! But the next day, added more fertilizer +100 ppm. The next day, the problem with the leaves started.