Looked at your pics. The deficiency were very subtle. It was hard read. I agree with jd that it looks like sulfer deficiency, as the biggest issue we are seeing I see a little mag and potasium deficiency as well.
To apply mag foliar feed 1 tsp per gallon put some in a quart add a touch of a surfactant / clean dish soap, think natural, not dawn and add the rest at the pot.
This is what I think you should do. Flush out the pots till you have some good run off let say a gal or two comes out the bottom. We want to saturate the entire root system. NO dry spots. I think then you should add a veg nute and the recharges and water in immediately after the flush, so you will have more run off to vac out of your trays. Dont flush and then wait for it to dry starving the plant. The veg nute should be about 600 ppms total ppm's water ppm nute and recharge all together. Mix it all in a gallon per label instructions at half strength , use the recharge at regular strength, then ppm meter it, if its hot add more water till it gets to 600-575 ish. or how ever much water you need to make up I think two gals should be able to feed those plants fine , so water in 2 quarts each evenly in the pot after the flush. Do the nutes for the next watering also. Then go back to the super soil thing you have going on.
foliar feed / water in the left over stuff at the roots on top of the feed you just did.
foliar feed for the next five days a light mist, lights off. So on the next day make up a batch of 1 tsp per gal of epsom salt ppm meter this keep it at 300 ppms or below 250ish , (didnt mention this above but dont foliar feed hot) pour some in a quart and add the surfactant. Pour the rest little bit around the pots equally and evenly. This quart you filled up should be enough for the next few foliar application. And stupid me you had some left over from the day before so use that stuff now and dont make a second batch til later. Brain fart. then top feed the extra mag on top of the roots then in a few days when you make a new gal of epsom salt. .
The extra mag isnt going to hurt anything, neither is getting some extra microbes in there.
leave it alone for a while.
Need to get the microbes in there and get them too work. Should of added microbes a long time ago.
research what microbes do. basically you made a super soil and grew a plant in it but something is off might be that the plant is growing faster than the microbes can keep up with it. Microbes are needed to break down all that organic material to make it available to the plant. The plant feeds the microbes. Its a party down there.
the recharge is cool I listen to the podcast when I trim. It has a bunch of stuff in it, you have a super soil. So why add more nutes (not to go against what I said earlier add nutes there) although I like the stuff that is in there. So one thing to consider is to just get a microbe product by itself and use that and save the recharge for another grow idk up to you i guess. I like the RAW brand bloom use it in veg and bloom the veg microbes are very similar and no need to buy two different bags of it.
You should be running 18/6, you sleep at night and your plant needs to too, except you have been keeping it up all this time and it is cranky. The plants does alot in the dark period, like growing and resting, important things.
Raise the light up while it does its thing. The best thing to do when there is a problem is to raise the light up and slow the grow. Let them recover, get their shit together. Maybe that light idk what it is other than an led, even the low watt ones are too intense for the plant if its too close.
Ppm the run off how hot is it?? post what it is. Flush till you get about 700-800 ppm as the reading of the run off in the tray. Then stop flushing. Then do above. (after thought)
Measuring run off ph is stupid that number tells you nothing. Microbes regulate the ph at the root surface.
Once the new growth looks ok then you can put it in flower. So re-evaluate in a week, if it looks good then it can go into flower. The damaged leaves probably wont turn back to normal looking.
