I have it narrowed down....I believe

I think I have narrowed this down to be either a Ph issue, calcium or magnesium, or combination? Or am I totally thinking in the wrong direction.

Appreciate your wisdom

You in soil? How old are the plants and where on the plant are the affected leaves? Pics of the whole plants and close ups of some of the affected parts are helpful What is the soil pH?

Yes in soil
Day 33 Flower
looks like many of the fan leaves

Don't know the Ph of the soil and just got a Ph wand meter 2 days ago. Up until then the Ph of the water i give her hasn't been steady but around 6.1 -6.9, since I got the meter i have been dead on 6.7

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Your ph is fine. What are you feeding it? Is th chlorosis just on the upper fans or all over the plant? Looks like low N.
/, and the beginnings of a cal/mag deficiency. Is it a Sativa dom?

Feeding fox farm big bloom and tiger bloom, however very little and upped it to half strength on yesterdays watering... looks more on the upper but the lower ones are yellowing.

Try adding some Cal/Mag, but I think it needs more N as well. Some Sat Doms devour Mg. If you can't get Cal/Mag, use Epsom Salts @ 1 tbsp per gal and water. Do that every other water until you harvest.

@ Killer can i jack your thread with 1 question for Jack, please? might be helpful for future gardening.

a mongo frog said:

@ Killer can i jack your thread with 1 question for Jack, please? might be helpful for future gardening.

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Hell Yes you can!

By the way I am smoking some killer Jack Herer now, and I forgot to answer before this is a sativa dominant and thanks for the suggestions.

That is just about when the Mg deficiencies started in my Sat grows. I now automatically supplement calcium and magnesium when I flip them.

Thanks Killer,
Jack, my gf sister has a real bad case of iron deficiency. i saw the plants checked her run off, it way way high like 7.0.
i told her to lower ph of next wattering to 6.0 . and i want to know about chelated iron in liquid form. does this fix the problom?

Yeah, but I have no idea what the dilution ratio would be. Are you certain it's an Iron Def.? If you can catch them, Matt Rize, SubCool, or FDD would be the ones who would know how to dilute that. Sorry I couldn't be more help!

Jack Harer said:

Yeah, but I have no idea what the dilution ratio would be. Are you certain it's an Iron Def.?

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yes i think i am. i double checked everything.

Check with some of the others here, I'm a lost ball in tall weeds. I only do a couple of strains, and I have them so dialed in that deficiencies are a thing of the past.