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There were signs of calcium deficiency (rust, stunting, lack of lateral branches). At the same time, the solution contained water 60ppm + calcium from GHF to 200ppm, raised the concentration to 300ppm, but the problem progressed. I decided to change the calcium, because this powder is more than three years old. After replacing the solution with new calcium, the problem immediately went away.
I changed fertilizers to organomineral ones, and I don't know if the appearance of a strong aroma is related to this, but the smell is excellent. And the stickiness is at a height.