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What can I do? Leafs starting to turn yellow. First grower

Hazebergstarted grow question 2y ago

Yesterday, I noticed some leafs starting to turn yellow and also the tips of the top leafs to be a bit brown. So I watered (nutrition in the desc) and calmag 2 ml, because I thought it might be either lack of PK or cal mg. What else can I do? What about my watering schedule?

Hazeberg

Hazeberg

Hazeberg

Hazeberg

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Leaves. Color - Yellow

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