Nitrogen deficiency or lockout? Need help! (With photos)

Good morning everyone, I am having a feeding problem in my plants but especially in 2. Let's start with the premise that in the past I have always managed to correct any deficiency in a short time and let's say that my feeding schedule in years has not changed but I know very well that every plant is different but I am getting to give really a lot of fertilizer and it seems to go the same way to make the situation worse. I'm nitrogen deficient and honestly if a few little leaves underneath are yellowing I'm not going out of my mind but from a few little leaves the plant is starting to scale up fast and they are starting to drop enough leaves every day. These symptoms so heavy only in one that is the only one that has the 20lt pot while the others are starting to show some signs of yellowing but nothing extreme, I am up to the third time of fertigation in a row and today I will be forced to give fertilizers for the fourth time in a row, guys the water is at 2.5 EC but besides it seems like too much I am afraid the soil will get saturated and I will go into lockout.
The plants are really huge but for this time I decided that other than a few side branches I would just do a light defoliation in vegetative and not go any further, so the plants are a bit dense now and I immediately thought that that might also be contributing in the continued demand for nutrients.
I use purified RO water for human use (020ppm).
Third week of flowering
Fertilizers
Advanced Nutrient
Grow, Micro, Bloom
Bud Candy
Big Bud
Nirvana
Bud Factor X
Sensi Cal/Mag
pH 6.5 (although it is lowered a bit by pH perfect nutrients but I have never had a problem)
They drink approximately 3lt each every two days.
Can anyone help me find a solution? Especially some advice for watering tonight guys.
Thank you in advance

PS: I grow in air-pot and adequately controlling runoff (even if it is minimal) is a big deal since some times the water comes out sideways before crossing the soil

2.5 ec seems high to me. usually I see grows max out at 1.5-2 but all grows are different and are based on environment. I have a low humidity so my plants transpire more and require a lower concentration of food because of that. Are you testing your runoff to see if your over or under feeding?
If your feeding at 2.5 then collect the last bit of runoff and if its not close to the same then your over/under feeding. I'm guessing you are already in lockout and need to only water until you get your EC back to normal levels.

Chow13 said:

2.5 ec seems high to me. usually I see grows max out at 1.5-2 but all grows are different and are based on environment. I have a low humidity so my plants transpire more and require a lower concentration of food because of that. Are you testing your runoff to see if your over or under feeding?
If your feeding at 2.5 then collect the last bit of runoff and if its not close to the same then your over/under feeding. I'm guessing you are already in lockout and need to only water until you get your EC back to normal levels.

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So I'll explain the situation better, the first watering was at 2 the second at 1.6 and the last ,since they seem hungry, I gave it at 2.5. I usually got in all of them at 2.2/2.3 without having any problem until the end. Tonight I will try all ways to read the runoff smoothly but I don't know...I am not very convinced it is a lockout although I admit I have thought about it! I'll leave you some photos so those who want to give an opinion can also see them
The humidity is at 55/60% even though I have two dehumidifiers incfunction 24h

EC, if correct, is far too high. You’re giving way too much unnecessary crap.

hotrodharley said:

EC, if correct, is far too high. You’re giving way too much unnecessary crap.

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What would you take away? I won a contest of theirs a year ago and used them all with great results, this year I wanted to start with organic but I didn't want to throw them away and I'm using them again just so I don't throw them away also because that would be a shame! Yes, the last watering I gave it at 2.5 but I repeat I usually max out at 2/2.3 but much later in flowering. this time I was watering the plants regularly and after I saw a slight nitrogen deficiency in the leaves at the bottom I increased the dose a bit, it seemed to be okay then I ran out of the base fertilizer and had to give less than half the dose I usually give and it started doing that. From the pictures I posted what does it look like, lockout?

Blackketch said:

What would you take away? I won a contest of theirs a year ago and used them all with great results, this year I wanted to start with organic but I didn't want to throw them away and I'm using them again just so I don't throw them away also because that would be a shame! Yes, the last watering I gave it at 2.5 but I repeat I usually max out at 2/2.3 but much later in flowering. this time I was watering the plants regularly and after I saw a slight nitrogen deficiency in the leaves at the bottom I increased the dose a bit, it seemed to be okay then I ran out of the base fertilizer and had to give less than half the dose I usually give and it started doing that. From the pictures I posted what does it look like, lockout?

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Personally? Give the trio and forget the rest. The micros in the trio include calcium and magnesium. I would only supplement those at the first of flower because demand is the highest then.

hotrodharley said:

Personally? Give the trio and forget the rest. The micros in the trio include calcium and magnesium. I would only supplement those at the first of flower because demand is the highest then.

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All right I will take your advice! Just to confirm...according to you looking at the images above are they in lockout? If yes, should I just give water for a while? I've never been in such a situation and it seems strange to me that above the plants are growing at a rapid rate

Blackketch said:

All right I will take your advice! Just to confirm...according to you looking at the images above are they in lockout? If yes, should I just give water for a while? I've never been in such a situation and it seems strange to me that above the plants are growing at a rapid rate

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I’m assuming there’s lockout simply because of all the stuff you have poured in.

hotrodharley said:

I’m assuming there’s lockout simply because of all the stuff you have poured in.

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But I can't explain how for the past 2 cycles the plants were smaller, same nutrients and ec about the same and never had a deficiency or excess and I don't even explain how that is possible since in their chart they recommend double the amount I use and there are many more products! Following this logic anyone growing with advanced Nutrients should incur lockout

Blackketch said:

But I can't explain how for the past 2 cycles the plants were smaller, same nutrients and ec about the same and never had a deficiency or excess and I don't even explain how that is possible since in their chart they recommend double the amount I use and there are many more products! Following this logic anyone growing with advanced Nutrients should incur lockout

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If they follow the feeding schedule and give all that crap they are frequently on here with issues. All the nute companies feeding schedules result in very high EC with the problems that go with it.

Aside from the crazy EC.
Are you aware that leaves not receiving enough light will be repurposed as food and yellow off and die.

You say your plants are bigger than last runs so it's a possibility.

Other than that take some run off readings .
Flush if necessary.

Also you could just have hydrophobic areas in your soil in which case a flush with a wetting agent might help.

coreywebster said:

Aside from the crazy EC.
Are you aware that leaves not receiving enough light will be repurposed as food and yellow off and die.

You say your plants are bigger than last runs so it's a possibility.

Other than that take some run off readings .
Flush if necessary.

Also you could just have hydrophobic areas in your soil in which case a flush with a wetting agent might help.

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This is what i was thinking on the leaves as well..

coreywebster said:

Aside from the crazy EC.
Are you aware that leaves not receiving enough light will be repurposed as food and yellow off and die.

You say your plants are bigger than last runs so it's a possibility.

Other than that take some run off readings .
Flush if necessary.

Also you could just have hydrophobic areas in your soil in which case a flush with a wetting agent might help.

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Alright guys thank you for the advice!
Anyway yes, I had made this post because I am not able to figure out if ,given the size of the plants, they are eating so much ,also because the plants are growing fast day by day, or if it was the totally opposite problem. The plants have been vegetating for about 2 months.
Tonight I will just give water and see what the runoff says, the fucking problem is the air pots that have holes everywhere and 2 times out of 3 water always comes out of some hole. Anyway yes I know it seems like a lot 2.5 but I never had any problems even with solutions with 2.2/2.3.
I thank you guys again!

coreywebster said:

Aside from the crazy EC.
Are you aware that leaves not receiving enough light will be repurposed as food and yellow off and die.

You say your plants are bigger than last runs so it's a possibility.

Other than that take some run off readings .
Flush if necessary.

Also you could just have hydrophobic areas in your soil in which case a flush with a wetting agent might help.

Click to expand...

farmerfischer said:

This is what i was thinking on the leaves as well..

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I respectfully disagree that leaves not receiving light will yellow and die. I kept these fan leaves green on a 13-week strain most of the way to harvest. This is from my signature below.
This isn't to distract from the OP's problem. His problem as mentioned is feeding way too much.

Kushash said:

I respectfully disagree that leaves not receiving light will yellow and die. I kept these fan leaves green on a 13-week strain most of the way to harvest. This is from my signature below.
This isn't to distract from the OP's problem. His problem as mentioned is feeding way too much.
View attachment 5238525

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Those are not as thick as OP's .. and no disrespect taken, theres never one awnser on these threads.. lol.
The middle and tops of his plants look fine or i would agree to a ph or over feeding .. say if there were yellowing or burning on middle and top of the plants/leaves then id agree to ph or excesive nutes.. but this is my opinion and im sure not everyone will agree which is cool..

farmerfischer said:

Those are not as thick as OP's .. and no disrespect taken, theres never one awnser on these threads.. lol.
The middle and tops of his plants look fine or i would agree to a ph or over feeding .. say if there were yellowing or burning on middle and top of the plants/leaves then id agree to ph or excesive nutes.. but this is my opinion and im sure not everyone will agree which is cool..

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I just took another look. Looking at his lower leaves I think he might be on to something regarding the air pots. If it changed his wet and dry cycle, I could see where at times his soil would get a bit to dry causing the plants to pull water from the lower leaves leaving them limp and dying off.
I like chatting with you and coreywebster.

Kushash said:

I just took another look. Looking at his lower leaves I think he might be on to something regarding the air pots. If it changed his wet and dry cycle, I could see where at times his soil would get a bit to dry causing the plants to pull water from the lower leaves leaving them limp and dying off.
I like chatting with you and coreywebster.

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Like wise,, you're all right.

Kushash said:

I respectfully disagree that leaves not receiving light will yellow and die. I kept these fan leaves green on a 13-week strain most of the way to harvest. This is from my signature below.
This isn't to distract from the OP's problem. His problem as mentioned is feeding way too much.
View attachment 5238525

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You don't have a canopy blocking light or a bushy enough plant to block enough light to lower leaves for them to be deemed not photosynthetically efficient.

Not sure the OP does either though tbh. Just brought it up as an example of reasons other than deficiency that can cause lower leaves to yellow and because his plants are bigger than he usually grows

Kushash said:

I like chatting with you and coreywebster.

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Ha, thanks. I always enjoy reading what you have to say and how you put it across.

coreywebster said:

Ha, thanks. I always enjoy reading what you have to say and how you put it across.

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I have a lower IQ than most of you guys and gals, so I try to stick to what I know and try to explain things in a way that a layman would understand when chatting with new growers.