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White leaf tips

Smoqerstarted grow question 4y ago

Any idea what can cause these white/light yellow leaf tips, mostly on the newest leafs?? Might be light burn, it’s quit a powerful led (niello m-900) or maybe high on nutrients?

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Leaves. Tips - Burnt

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Mr_Weeds_Autosanswered grow question 4y ago

It actually is a little bit of both. The tips are slightly burned as you stated, but you can also see some leaf cupping which is a sign of light/heat stress. I would just back off of both a bit, take the light to about 24"-30" inches above the canopy and go a little lighter with the dosage of nutrients.

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