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MarianPazdziochstarted grow question 3y ago
I need advice on what this could be. Brown and purple spots have appeared on the leaves. It's the 4th week of flowering. Soil pH is 6.5, and I'm only watering with water at pH 6.5. I have this on 2 plants. I give nutrients every other watering, 2ml per 1 liter of water. HPS lamp 250 W, temperature 26-28°C, humidity 45.
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Leaves. Color · Yellow
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Storkanswered grow question 3y ago
Look like
Nutrient lockout
In soil, the salt and PH can build up, in this case, flush the plant to clear the soil/growing medium from excessive salts
Flush with PH adjusted water until the point that runoff is similar in PH, after allowing the soil to dry to prevent rot roots and then start watering with the fresh mixture
And add more calmag to the fresh mixture
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