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I'm a little bit worried about recent signs o...

Butrus
Butrusstarted grow question 6 years ago
I'm a little bit worried about recent signs of yellowing leaf tips on upper/newer growth which as far as I know are usually signs of nutrient burnt, right? But this is definitely not the case as I didn't feed them with any nut's yet...any ideas, please? See last 2 picts of week 6
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Week 6
Leaves. Tips - Burnt
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CRiSPrGrow
CRiSPrGrowanswered grow question 6 years ago
hey @butrus , do you know the PH of rain water ? it should be around 5.5 , and with such a PH all the nutrients will become available to the plant eventually. But it does rain less often than you water right ? so actually soil has all the nutrients a plant needs , all you really need in a soil grow is water and light. I see you're not overwatering with that 0.15 L a day (i'm guessing over 7 days) , so the only explanation is that the soil has more nutrients than the plant needs, which is a common thing. cannabis only needs like half the nutrients of other flowers most of the time, so most store bought soils are actually "hot" for the plant. So yeah, you do have nutrient burn. If you're planning on adding more nutrients, what I suggest is to hold off for one more watering, and proceed with a plain water flush next watering - water until run off then go 20% more water than that, squeeze the bags of any excess water and the proceed to feed next watering. Hope this helps growmie ! 🚀
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OutForReal
OutForRealanswered grow question 6 years ago
Hello! Your humidity is at 25% instead of 60% for that stage , it can be a sign of humidity stress. Try to use a humidifier to get an higher RH. Your PH is the hydro/coco sweet spot but in soil it is between 6 and 6.5 so 5.8 is too low , could be that too.
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Athos
Athosanswered grow question 6 years ago
The soil might be a bit hot, meaning it's could be too fertilized. I would not worry unless it spreads.
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