Led causing deficiencies

kmog33

kmog33

Well-Known Member
stangerpower said:
kmog far left lady is a critacl sensi star see her tips?? ive nursed her back after a few weeks under hps an t5s she was way worse just hit her with led today will see wat happens fingers crossed will feed in few days wit cal mag as there fed already
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The tips seem kind of like nute burn, possibly you need lower ppms under leds from what ive heard, but it looks like some of your leaves have the same issue im having a little further up on the leaves.

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stangerpower

stangerpower

Active Member
and these are my ladys as of day 49 they have went threw hell an abuse but are forgiving lol ive pinched tied down beat em up an gave em a hug but they are pulling threw from left to right (critical sensi star/g13 blueberry gum/wos pakistan ryder auto/bomb seeds berry bomb) the auto was an accident wasnt suppose to be ther was a freebie an didnt look it up nor did it say auto lol oh well early smoke wont hurt
 
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az2000

Well-Known Member
We know LEDs exacerbate our plant's tendency for magnesium deficency. Perhaps an overabundance of a particular spectrum could lead to a K deficiency, or cause an imbalance in the ratio of Mg and Ca (leading to an abundance of Ca causing a K deficiency). Too much N can cause a K deficiency too (I've read).

I would hit it with more K, reduce any calmag you're using (since you don't seem to have a ca/mg deficiency).

If you want to explore how one LED light could trigger a deficiency while another doesn't, start a thread in the Indoor->LED forum. If you could get StarDustSailor's attention, he'd probably blow your mind with details about what's happening.
 
kmog33

kmog33

Well-Known Member
az2000 said:
We know LEDs exacerbate our plant's tendency for magnesium deficency. Perhaps an overabundance of a particular spectrum could lead to a K deficiency, or cause an imbalance in the ratio of Mg and Ca (leading to an abundance of Ca causing a K deficiency). Too much N can cause a K deficiency too (I've read).

I would hit it with more K, reduce any calmag you're using (since you don't seem to have a ca/mg deficiency).

If you want to explore how one LED light could trigger a deficiency while another doesn't, start a thread in the Indoor->LED forum. If you could get StarDustSailor's attention, he'd probably blow your mind with details about what's happening.
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Thank you. Lol i wish we could just tag users in posts. I thought i posted this in the led forum...stupid phone haha. But ya, im wondering if it is a spectrum thing.

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kmog33

kmog33

Well-Known Member
Or now that it has been mentioned the mixing due to lenses.

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kmog33

kmog33

Well-Known Member
az2000 said:
You did. I thought this was the "General" forum. Sorry.

I believe all we have to do to tag him is @stardustsailor.
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Its good i thought i fucked up haha. Anyways heres a pic at lights out, you can see its only a couple branches on the far right of the plant, the rest of the ant is green and happy lol.

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az2000

Well-Known Member
kmog33 said:
heres a pic at lights out, you can see its only a couple branches on the far right of the plant,
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Are you sure it's not just normal end-of-life fading? Those buds look mature. I'd expect the plant to start showing its age.

I agree that it's strange one light brings it out more than the other. But, at this stage of a plant's life, maybe it's just finishing sooner?
 
kmog33

kmog33

Well-Known Member
az2000 said:
Are you sure it's not just normal end-of-life fading? Those buds look mature. I'd expect the plant to start showing its age.

I agree that it's strange one light brings it out more than the other. But, at this stage of a plant's life, maybe it's just finishing sooner?
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They still have 4 or so weeks left. They did have a long veg period. But just think its really weird that its only happening under one light.

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az2000

Well-Known Member
kmog33 said:
I have a ti smartlamp probloom 600 and a vipar c2x2.
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I was thinking about this more. Mg def seems like the most logical choice because that's what LED is known to exacerbate. I came back to look at your photos more closely. I see some leaves rolling over, or V shaped (edges cupping up). If you've seen that, that's a sign of Mg def. The yellow necrosis which looked more like K def might be Mg def.

Is your Vipar more "blurple" colored? I'm not saying the Vipar's spectrum is a problem. If it drives the plant harder that could be a good thing if you anticipate it's needs (add Epsom salt in mid flower).

Curious what you think.
 
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akaki

Well-Known Member
kmog33 said:
Thank you. Lol i wish we could just tag users in posts. I thought i posted this in the led forum...stupid phone haha. But ya, im wondering if it is a spectrum thing.f
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same issues here i'm fighting with mag deficiencies under 2 veros 29 i use epson but still don't know if i can rid of it completely....
 
kmog33

kmog33

Well-Known Member
az2000 said:
I was thinking about this more. Mg def seems like the most logical choice because that's what LED is known to exacerbate. I came back to look at your photos more closely. I see some leaves rolling over, or V shaped (edges cupping up). If you've seen that, that's a sign of Mg def. The yellow necrosis which looked more like K def might be Mg def.

Is your Vipar more "blurple" colored? I'm not saying the Vipar's spectrum is a problem. If it drives the plant harder that could be a good thing if you anticipate it's needs (add Epsom salt in mid flower).

Curious what you think.
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Mag was what i thought at first then it turned into more of a pk issue

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gk skunky

gk skunky

Well-Known Member
Me and my buddy dxe both have to feed a little heavier than we did with the same strains under hps. Also finish a little faster under LED. If your pH is good you should consider uping your regimen a little.
 
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