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Very unhealthy 3 week old plants. New grower, trouble diagnosing the problem

thebiologiststarted grow question 6y ago

Please help diagnose problems in the "one week later" pictures. EC 0.7,pH 5.6 - 6.0. Humidity 47-55%. 1-2cm distance from basket to water, high air flow... Not sure what is going so wrong. Over watering? Nutrient shortage? Brown spots on leaves. New growth curling, dark and slow

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Leaves. Curl up

Leaves. Color · Yellow

Leaves. Color · Dark-brown

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Posseanswered grow question 5y ago

Not all seeds are equal, bad genetics

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BobTheGroweranswered grow question 6y ago

Looks like it could be Ca or Mg deficiency. source: https://www.thcfarmer.com/threads/there-is-no-such-thing-as-a-cal-mag-deficiency.62747/#lg=attachment393229&slide=0

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