Plants yellowing everywhere please help

Ive been having this problem for a month or so I have sensi grow a+b nutrients by advanced its ph balanced, anyways I stopped feeding them and I’ve been using just water for the past week also I used SM 90 for the roots just in case there’s a problem in the pots I don’t know why it would be doing this it can’t be a nitrogen problem because it’s been fed all of veg if anyone thinks they can help me out that would be great, thanks.

How well are those pots aerated? Are they draining well? Lots of holes? The old yellowing leaves look normal..The newer ones look like nutrient lock out. Try getting some shade on those pots as well.

canadianbuds said:

Ive been having this problem for a month or so I have sensi grow a+b nutrients by advanced its ph balanced, anyways I stopped feeding them and I’ve been using just water for the past week also I used SM 90 for the roots just in case there’s a problem in the pots I don’t know why it would be doing this it can’t be a nitrogen problem because it’s been fed all of veg if anyone thinks they can help me out that would be great, thanks.

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Is that soil? I only use white pots outside to reflect intense sunlight which creates heat. When you grow with pots outdoors always have a 15+gallon pot or else you will be feeding often (good or bad thing). If I were you I would check my runoff with an ec/ppm meter. If its higher than what you feed, then theres buildup thus you need to flush. If its lower than what you put in, you need to up feed. Im growing outdoors in pots of coco. Watered every three hours. If my coco dries, buildup occurs which is not good. Im not sure if it applies to soil. Good luck!

They seem to be draining fine I drilled 6 holes into each pot, but I think your right about the nutrient lock I’ll continue to flush until they start to improve the ones in the ground are lush green nothing wrong with them same with a trainwreck I have in a pot, not in the photos

Iron deficiency and magnesium are hard to tell apart if i had to pick id go with iron. Yet I'd give them a dose of both iron n magnesium juts to cover all your bases. Also I'd add in calcium they all seem to go hand in hand. If you're deficient in one soon the others will fallow.

Okay I’ll run the my hydroponics store tomorrow and get some more first pic is the only healthy one in the pot 2nd is the one in the ground

canadianbuds said:

Okay I’ll run the my hydroponics store tomorrow and get some more

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Exp for aggressive outdoor growth i think you'll be happier switching to a powder nutrient. It'll save a lot of money and outdoor plants aren't as finicky. Overdosing won't be near as much issue as indoor.