Leaf necrosis in between veins on 2 plants

Hey ya'll

I knew it would happen soon enough; running into my first nutrient issues with converting over to FloraFlex.

I just noticed 2 of my 6 plants showing signs in the attached pictures. I did not see anything yesterday morning when I watered these. They did get a nice feeding of 2.1EC (first time full strength) yesterday so I'm certain it's something I did regarding too much nutrients.

The two plants effected are Chocolope and Strawberry Cough, so I know it's not strain dependent. The rest of the 4 plants look fine.

Details of the grow are bellow and also in my grow journal: https://rollitup.org/t/laggeds-dual-line-sativa-run-super-lemon-haze-chocolope-strawberry-cough.1071555

Promix HP w/ 4-4-4, worm castings
Feeding every other watering. These have been getting 1/4 - 1/2 strength mostly before ramping it up to 3/4 and finally full strength yesterday.
FloraFlex B1/B2 w/ Bulky B - 2.1 EC last feed
I've added cal/mag once in veg and once when flipping to flower - didn't really see a need for it more than that.
Added Recharge at each transplant and flip and again last Thursday, typically 1/2-3/4 strength.
Mars Hydro TSL 2000 Lights have been ~17in started at 50% when flipping to flower, gradually increasing to right now 80% slowly increasing height to currently 19in
82F/65rh lights on
78F/51rh lights off

Any help is greatly appreciated!

Strange gaps...idk if it's environmental or nute issue...do you spray any foliar by chance?

mudballs said:

View attachment 5120568
Strange gaps...idk if it's environmental or nute issue...do you spray any foliar by chance?

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I do not use foliar sprays, no. Sometimes the leaves are a tad wet from laying on top of one another. The only other thing I could think of is my buddy who's growing in the same space uses one of them sprayers to water his plants, but I don't think he got my plants wet, mine are a bit taller than his. It's a possibility though as the two plants effected are closer to his.

Some more pics, including whole plant

Lagged said:

wet from laying on top of one another.

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This could be it, i saw another post with similar damage. I dont wanna search for it but it looked nearly identical. Leaves just cant do what leaves do when stuck to one another, so they get severe necrosis

mudballs said:

This could be it, i saw another post with similar damage. I dont wanna search for it but it looked nearly identical. Leaves just cant do what leaves do when stuck to one another, so they get severe necrosis

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I would be quite happy if it was, however I think given the leaf that is in the second set of pictures above was in direct light with no competition and also the uniformity of the necrosis that there is something else at play here. I will snoop through the tent and see if I can find any evidence of your hypothesis. Thanks for the input!!

ca mg looks ?? check ph ?

Looks like potassium deficiency.

What I see is nute burn. You could easily cut your EC in half. Plants don't like full strength!

HydoDan said:

What I see is nute burn. You could easily cut your EC in half. Plants don't like full strength!

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Yeah that's what I was thinking, I've been giving them just straight water the past 2 days, burns progressed slightly but I'm guessing that's just from some leftovers in the soil.

But

Today is feed day for the others. might take the two effected plants off the microdrip system and give them water by hand today. Hopefully I didn't fry these ladies lol

Your feeding with 2 different fertilizer ? Didnt read it all so.... I see 444 and another liquid one?

myke said:

Your feeding with 2 different fertilizer ? Didnt read it all so.... I see 444 and another liquid one?

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Hey myke. No the 4-4-4 was an original soil amendment. It's probably all gone by now but just wanted to give as much info as possible. The floraflex is a powder nutrient

Lagged said:

Hey myke. No the 4-4-4 was an original soil amendment. It's probably all gone by now but just wanted to give as much info as possible. The floraflex is a powder nutrient

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Ok ya had a quick look at the journal,Do you get some runoff here and there to flush out any build up?

New growth has burnt tips,assuming too much of something is blocking others causing the spots between the veins.
In hydro I would get this on my more indica strains.Was a bitch when I had different strains in one system. Now In separate soil containers they seem happier with less food compared to my other hybrid strains.
Maybe not your issue, just some food for thought.