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Anyone can diagnose the issue?

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Anyone can diagnose the issue?

csongi 6 Replies 663 Views
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csongi

csongi

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7th week of flower, 300w led on 60%, soil (60%coco,20%hummus,20%granulate, 10% choir) 6,2 ph, biobozz feeding chart (calmag 5ml, fishmisx 4ml had to elevate those as they showed deffiency (purple stems and yelowish leaves)

Anyone can diagnose the issue
 
I'm going to go out on a limb and say it's your substrate mix which somehow equals out to 110%
60% coco is ok but what kind? Was it washed and buffered? And what's your watering schedule?
20% hummus (guessing you mean humus the organic material not the chickpea paste)
20% granulate - what kind of granulate?
10% choir - and this is important... what choir did you use? Vienna boys choir? High school choir? Heraldic angel choir? (sorry j/k couldn't resist) Guessing there's a typo there and I'd like some clarification if you don't mind.

If you're new to growing, especially growing in coco, you're better off just using a 70/30 coco perlite mix and not adding any of that other stuff. With the addition of organic material (humus) you're essentially growing in a substrate more like soil, and the humus retains too much water. I've seen a few threads where people have pulled off stellar grows like that, but most run into problems like you have. Lord knows I tried a couple times and ran into so many problems it kept me busier than a one legged man at an azz kicking contest.
 
Thats a pretty damn hard mag crash, wondering if that's what unbuffered coco damage looks like.
possibly some light stress as well, though lots of info needed still
 
thx for the info
i guess for the light stress too, as i raised the strenght a couple of days before, otherwise they look ok, beside the fact that i did nit really managed to keep the same hight, but i’ll put a net on before switching to flower, so that might fix the height issue more or less
i reduced the light back to 50% so lets see inacouple of days…
 

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