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Little brown discoloration on older leaves
Elgaranswered grow question 5y ago
Hey, these are signs of calmag deficiency, these brown spots are the main symptom. Add some calmag and you’ll be okay 😊
JUNGLE_B4RNSanswered grow question 5y ago
500 or 700 ppm ?
500 is a bit low, 700-750 ppm (NaCl 0.5 scale) should be fine
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