Little brown discoloration on older leaves

G_newsstarted grow question 5y ago

Hey all so how do these 3 plants look? Only one has some discoloration since then I changed the water Ph6 ish Ec 1-1.3 Ppl500-700 These are rough averages

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Week 4

Leaves. Color · Dark-brown

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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 😊

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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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