Nor do I...

u mean those brownish spots right, i get that too sumtimes i dunno what it is i usually feed a light full spectrum nute mix and there all good but hey thats jus me

girlwondergrows said:

1. Are you growing from seed or clones?
Clones
2. How old are your plants?
About 3 weeks in current pots, transplanted directly out of cloner
3. How tall are your plants?
6-12"
4. What size containers are they planted in?
100 gallon
5. What is your soil mix?
Standard outdoor soil mix, made from compost etc with a fair amount of DTE amendments.
6. How often do you water and what type of water do you use?
As needed with well water.
7. What is the pH of your water?
Unknown
8. What kind of fertilizer do you use and what is its NPK ratio?
So far just the stuff blended into soil and top dressed worm castings
9. Do you foliar feed or spray your plants with anything?
Did kelp once, but nothing regularly yet

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You workin' the microbes, GWG? If so, these parameters are far less important. If you're not working microbes with those organics, then I suggest a big inoculation. But wait, there's chuckle-time.

girlwondergrows said:

10. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights")
Nuclear furnace, 386 YottaWatts
11. How close are your lights to the plants?
93 million miles
12. What size is your grow space in square feet?
10000 ft3

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<chuckles> +K for these answers.

girlwondergrows said:

13. What is the temperature and humidity in your grow space?
50* to 80*, unknown humidity

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If the plants are 93,000,000 miles from the lights, RH cannot be controlled by you very effectively unless it's a controlled greenhouse. However, it's good to know the humidity. I suggest getting one of those cheap gauges from wherever.

girlwondergrows said:

14. What is the pH of the soil?
Unknown
15. Have you noticed any insect activity in your grow space?
Yes, various insects but none are causing this problem I think
16. How much experience do you have growing?
Several years, but not that much outdoor experience

Clearly an immobile element, but which one? Any help appreciated.View attachment 228753View attachment 228755View attachment 228759View attachment 228762

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Ok, I really can't see much except some slightly reddened petioles. Those are typically indicative of one of three things; N-, P-, or it's a DJ Blueberry or similar strain known for purpling and striping. The deficiencies are not necessarily indicative that there's insufficient N or P being offered, it could mean the plant can't get to it. This is also where knowing pH parameters can be so helpful.

Someone's mentioning brown spotting, which based on your pointers suggests to me that you're observing the very beginnings of a Ca-. Spotting and necrosis on newer growth on leaf margins, or occurring interveinally, is typically a Ca-. SO easily stopped should you be able to give a foliar of some Ca concoction. I prefer BioLink's 6% Ca, because it's certified organic and doesn't give extra N. However, when I couldn't get it I ended up getting Calplex 3% Ca. I don't like it as much and don't use it on anything I plan on selling (organic market gardener, labeling laws and issues, sales of fruits and vegetables ONLY).

You cannot correct what you've already observed, the spotting will remain. What you can, and should (read: MUST) do right now is stop that progression and continue offering this plant sufficient and sufficiently available Ca. It can be done with top-dressings, but the worm castings clearly aren't cutting it for this particular girl (it's not The White, is it? that one's a real Ca-hog). Watch for other issues to pop up, but I'm betting that if you can get the Ca problem corrected that the purpling, assuming it's from a deficiency or imbalance, will revert to green.

Either way, I'm observing generally fairly healthy plants with very slight issues. You could do nothing but observe and it may never get worse than this. I would not use dolomite here either, by the way. It would be adding in carbonates and you said you're using well water, but didn't report parameters.