Issue with this female

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This female is on the same nutrients as others but colour on the leaf is not changing what can i do to treat her
 

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Problem:leaves turned yellow

Medium/grow method:soil

Feed and supplement used: calmag, terra grow, superthrive, katana roots,

water source:tap water de chlorined by leaving a airstone in for 24 hours

Strain/age:stardawg 3 weeks

light used:led

Climate:21 degree C , 60% rh

Additional info:have multiple strains in tent, however these 5 stardawg females are the only one effected with these disease I have feed calmag on every feed also occasionally feed them super.thrive
 
Don't get it big enough, plz upload next time " full image " but to me it looks like a heavy N def and don't know the ferts u use, wait till seniors check in here, good luck.
 
Looks like they are screaming hungry for Nitrogen. This particular strain, all 5 of them, sound like heavy N feeders. You are growing in soil but didn't say what kind of soil, what brand? I would start feeding them something high in Nitrogen on daily feeds but at 1/4 strength and watch the new growth as the yellowing that is there wont go away. Now understand this, since you are growing in soil you should be feeding the soil as opposed to feeding the plant. Starting at the seedling stage and continuing into pre-flower I feed my soil NITRYX, which is a product that contains Bacteria capable of fixing nitrogen from the atmosphere and making it available in the root zone of the plant. Of all the issues I see in some of my grows, Nitrogen is never one of them. If you are growing in soil this is a great product to use for all your strains, even those that are not showing this yellowing of the leaves, this is natures way of ensuring the plant is getting what it needs and WHEN it needs it.

f-84.jpg
 
Additional info:have multiple strains in tent, however these 5 stardawg females are the only one effected with these disease I have feed calmag on every feed also occasionally feed them super.thrive
.... are all the stardawg's are like this, or just the one? That's really advanced, more than one thing likely, but N and Mg defc.'s are happening, maybe S too,...
.... we need more info on the nutes, dosage frequency, NPK#'s
in-pot pH may be off as well, unless all the Stardawgs are doing this,....
 
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