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Old 01-17-2019, 03:53 AM #1
MtnLivin
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What do you guys think? Micro or burn...

Wedding Cake F2 Pheno here and she always shows this tip yellowing on the top leaves only. I'm having a hard time believing its fertilizer burn when no other genetics in a full 7k sqft veg room are showing any signs of burn. Max PPM's are 800-900. I'm leaning towards a micro nutrient issue, but I am having a hard time diagnosing. My colleagues and I will be sending in a leaf tissue test done soon to see what's really going on. In the mean time I would love to hear everyones thoughts. Thank you!

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Old 01-17-2019, 03:59 AM #2
iTarzan
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Skunk #1 is prevalent in many crosses. There was a pheno in the original skunk #1 that had yellow tips or edges of the leaves. It was not a nitrogen problem. It was one of or the best pheno of skunk #1. It was described in Neville's catalog. This could be a genetic trait.
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Old 01-17-2019, 04:08 AM #3
Ibechillin
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What are you feeding with? What medium?
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Sadly Pseudoscience works the same way, and dunning kruger aint helping much either...
The Science Of Grow Lighting (HPS, CMH, LED) & Photosynthesis Explained: (Sticky Thread)
https://www.icmag.com/ic/showthread.php?t=358147

The Drying and Cure Process Explained In Depth, Information On Long Term Preservation: (Sticky Thread)
https://www.icmag.com/ic/showthread.php?t=358186

Tons Of Information On Growing, Root Systems and Breeding:
https://www.icmag.com/ic/showthread.php?t=344347

Silicon, The Misunderstood Element.
https://www.icmag.com/ic/showthread.php?t=352413

Tons of information on Humic/Fulvic acid and sources:
https://www.icmag.com/ic/showthread.php?t=352265

HOW TO GET 1.5+ GRAMS PER WATT!:
https://www.icmag.com/ic/showthread....330588&page=29

A Guide On When To Plant Outdoors & Force Flowering:
https://www.icmag.com/ic/showthread.php?t=352312

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Old 01-17-2019, 04:39 AM #4
Lester Beans
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Potassium deficiency. Most likely low pH or too much Cal/mag.

Can foliar some kelp or other K product.
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