burns on tips and edges

Grrrowerstarted grow question 6y ago

the large leaves seem to be fine, but the small ones between the internodes are developing several burns Soon I will proceed with the washing, but what could it have been?

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Week 4

Leaves. Edges burnt

Leaves. Tips - Burnt

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MadeInGermanyanswered grow question 6y ago

Don't worry ;-) looks great ;-) Assume a lot of food because it's so dark :-)

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