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White leaf tips

Smoqer
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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Week 7
Leaves. Tips - Burnt
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Mr_Weeds_Autos
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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