can anybody identify this problem?

Would be good to see an overall picture of the plant. It looks maybe a little pale like it needs more nitrogen

lol I have had that cant say how many plants at one . for reasons nobody needs to know any ways . just 1 plant out if ??? lol had the issue and it was in the same soil same nutrients same every thing . it cleared up after a few weeks . so is this your only plant with this issue ? hopefully

serious misspells aboue im higer then a kite right now. smokeing my left over black berry .

yeah i thought yellow is usually nitrogen... but all the N deficiencies i saw online didnt look like that... yes only 1 out of the group.. there are no changes in variables other than strain. The others are different genetics

Is it only on 1 or 2 leaves? I don't think it's any kind of deficiency the plant looks pretty good

TXskunkKush said:

Is it only on 1 or 2 leaves? I don't think it's any kind of deficiency the plant looks pretty good

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its 2 leaves up top. and a few of the baby leaves on the bottom... it did it at about 2 weeks old. then stopped for a few weeks. and came back

Does it stay the pale green or turn orange/brown, maybe it's just bad cell growth, the leaves themselves don't seem to be wilting or doing any curling of any kind. I wouldn't worry too much

TXskunkKush said:

Does it stay the pale green or turn orange/brown, maybe it's just bad cell growth, the leaves themselves don't seem to be wilting or doing any curling of any kind. I wouldn't worry too much

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I agree with this. Your plant looks pretty healthy other then those couple leaves. Just keep an eye on it, it doesn't look like a traditional nitrogen def. to me, I don't think that is your problem.

It could be an issue somewhere in the roots. Do you have a scope? If yes then look for signs of pests, you never know.

Have you used any foliar feeding or pest conrol? It almost looks like maybe the stomata might be blocked or having trouble transpiring. What are you temps and humidity?

no i havent foliar fed, or sprayed for pest. I plan on transplanting in the next few days into a bigger pot, so i will look to see if i can see anything when it comes out the pot...

Wow i just realized that my original text never showed up before i posted the pics =/ there was a pretty good amount of information.. FFOF, FF nutes once a week PH 6.3-6.8 .. T5 @ 18-6. temps stay 70 with lights on, high 60's with lights off

Honestly looks like a slight burn, but it doesn't look bad at all man, keep up the good work, your gonna get a couple yellow leaves here and there, as long as it doesn't spread to the whole plant

My original post was supposed to say that this is a very nice CBD strain. and the only seed that i had of it. about 6 weeks from germination. hoping to correct any problems there may be... i didnt feed with nutrients for the first 3 weeks... also for the first 3 weeks i DID ph'd the water, but didnt add any calmag...

I prescribe 30 to 75ppm cal mag in res prior to adding nutes and make it a little bit warmer like 70-80.

RO water is 28ppm when i checked it 2 days ago. not sure what adding the calmag does to it. i will check tomorrow. i can turn the fan down just a bit to raise temps

SirSmokeAlot303 said:

RO water is 28ppm when i checked it 2 days ago. not sure what adding the calmag does to it. i will check tomorrow. i can turn the fan down just a bit to raise temps

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Your RO water has no calcium nor magnesium in it. It needs it added back.

yeah im adding calmag. 1tsp per gallon (as according to the bottles directions). I didnt feed for the first 3 weeks. or add calmag.. picked up some nutes and calmag around week 3 and have been ontop of it for the last 3 weeks

Ed Rosenthal has this pictured in one of his books, that I no longer have. I think you all nailed it with the Cal Mag advice/solution.

Nice baby, by the way, I love when they're all fat and happy like that.