hi there Shishyw, actually it does not look like cal mag deficiency to me. This look like pH related problems. That's because you're already adding cal mag , and i'm quite sure in soil that's enough. What happened is you're using many additives that will raise the pH and cause fluctuations. for example GO seaweed. you should really check out the input and output pH, input should be 6.0 output should be 6.5, i'm guessing there is an issue there. Hope this helps ! 🚀