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Weak yellow leaves with red Stems

Lazarousstarted grow question 6y ago

Weak yellow leaves on the bottom with red stems. I use 1/3 tap water, 2/3 filtered water for its pH levels. Could that be my issue? I feed twice a week Fox Farm Big bloom 2ml/l, Grow Big 2ml/l and Cal/Mag 0.5/l. Cal/Mag with every watering to make up for the soft water.

Lazarous

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Leaves. Color - Yellow

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The8thChevronanswered grow question 6y ago

Too much calmag can lockout potassium, so that's possible. That Looks like it might be you first true leaf. If it is and you're already into week 4 or beyond, losing that leaf is completely normal. If it's still early within 2-3 weeks old, it's almost definitely nute burn as they don't need nutes until the end of week 3 usually.

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