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Can anyone concur that what my leaves have suffere...

Heresay
Heresaystarted grow question 6 years ago
Can anyone concur that what my leaves have suffered from is light/heat burn in week 9 snaps.
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Week 9
Leaves. Tips - Burnt
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Athos
Athosanswered grow question 6 years ago
Looks like light leaf bleaching. Do try to increase the light distance and let the plant get used to the new light source.
DudeGrowsWeed
DudeGrowsWeedanswered grow question 6 years ago
It does not look like heat/light stress to me.
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Stick
Stickanswered grow question 6 years ago
Hi there! This can't be light-stress to me since your summits look fine and the plant don't show any other symptoms (despite the yellow/white color, the leaves maintain their shape and don't seem burnt) so I'm more thinking about a combination deficiency : Cal/Mag + Phosphorous. You're feeding with very low amounts of nutrients but your plant is already 9 weeks old, she needs more nutrients intakes to flower. There are many reasons to explain this combination deficiency: 1) your pH is a bit high, almost neutral (7) whereas your soil needs to be in a pH range from 5.8 to 6.5 (I target 6.2 in order to prevent from pH-pen calibration issue). 2) I guess your ppm is too low, as mentioned previously such tall plant need more nutrients intakes at this stage. 3) overwatering can result in a nutrients deficiency, since the roots are smothered in water/nutrients they can't manage to absorb it. Your soil needs to alternate between dry-cycle and wet-cycle. I'd recommend to lower down your vegetative nutrients (PH Perfect Grow) and increase your PK intakes (PH Perfect Bloom). From what the manufacturer says : up to 2ml/L Grow, 4ml/L 6 ml/L Bloom, but as always you may want to go progressively and start with lower amounts. I'll be around, keep us up-to-date so we can help you to adjust your parameters, and happy growing!
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