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Faint Purplish Spots
Hydronautstarted grow question 3 years ago
Leaves have faint large spots in the center/top of the plant. Light is 8” from the center of the plant. Almost purplish/gray color. I have a mid grow flush coming up this Saturday. Long flush? Is the light distance to blame, something else?
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m0useanswered grow question 3 years ago
your NPK in GH nutes alone is.
1.3-2.5-4.3
add in the others as well.
silicon 0-0-4
calmeg 1-0-0
koolbloom 0-10-10
floralicious 2-.8-.02
I don't think it needs more potassium, maybe less.
Could try 1ml-1.2ml calmg vs .8ml
excess potassium also looks similar to what your experiencing.
and needing phosphorus also looks like this.
excess potassium locks out calcium as well and this looks like that too.
I'd cut back potassium somewhere maybe armor SI and Kool Bloom / flora grow.
Could as in more micro to boost the lost nitrogen from grow.
Best Of Luck!
m0useanswered grow question 3 years ago
Let me know if you need any more help with this, you can use the DM feature.
Your inbox is the little green arrow at the bottom right of the screen.
Cheers,
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Ezzjaybruhanswered grow question 3 years ago
So I run GH nutes.. very similar line up to you when I’m flowering.
I have the flora trio, plus armor si, liquid kool bloom, and calmag.
My numbers are similar to yours, for photoperiods - and I’m pushing 1000ppm when it’s all mixed up.. so I can’t imagine what you are running is only at 600.
Point being, I think this is over feeding. Some autos are temper-mental with excess feeds.
Like i said this is similar to what I run for photos, in coco, and I try to keep it around 800-900 max for my flowering feeds.
Of course it depends on your water source, I use tap that’s around 100 PPM.
I’m not sure of the exact cause of the symptom shown here but I’ve seen similar from over feeding. And that liquid kool bloom is especially potent.
Hope this helps.
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Grey_Wolfanswered grow question 3 years ago
@OuterBanks hi mate looks likely it is lacking in potassium
after the flush add more potassium to the nutrient mix
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