In need of help diagnosing a deficiency

[Flambino]

Hey gang.. I've got 4 girls going in a 3x3 tent, 2 purple afghan kush, a gorilla, and a critical + 2.0. They are all photo period plants, currently in week 10 of veg , and they are growing in fox farm happy frog soil. The nutrients they have been getting is the solo tek grow by growtek. These girls were in 1 gallon pots about a month ago, when the smallest purple kush got some nute burn. So I backed off the nutes by half for a week, and that was when the leaves started to canoe.i started asking around and was told things like check your ph, and too much water.. so I bought a blue lab ph pen, and up potted them 2 weeks ago into 5 gallon pots. I have yet to water them until there is run off, and although the c+2.0 and gorilla are drying out within a day or so, the 2 PAK's stay wet for like 3-4 days. Also I should mention, that on the gorrila- the leaves were looking like they were starting to cannibalize themselves... so I bumped up the nutes again last week, but they are still showing signs of stress.The temps are hovering around 75 and the rh is steady at 52%. I've been troubleshooting this for almost a month now and cant figure it out, and I dont want to switch to flower until I've isolated, and fixed the issue. Plz help.
Thanks in advance
1st and 2nd pics are of the 1st PAK, she was the one that got the nute burn, and is the smallest of the bunch.
Pics 3,4 and 5 are the 2nd PAK and the canoeing leaves.
Pics 6,7,8,and 9 are the critical plus and the problems she is having.

 

[BeanTownFan420]

I think you may have over fed them.Others will chime in.

 

[Flambino]

Pics 10-14 are the gorilla..she is the biggest girl, and she was the last to start to show symptoms, and was healthy until last week. as an after thought, I have been watering/feeding at a ph between 6.5 - 6.8

 

[Emilya Green]

The problem you are having is presenting as a potassium deficiency. I am not familiar with your nutes, but other than this deficiency the color looks pretty good. It is my belief that you still are not adjusting pH correctly, even with a brand new bluelab pen. I am having trouble wrapping my head around the fact that you still are not being accurate with your pH adjustment (6.5-6.8 is a huge range) and you are attempting to adjust to the wrong place in order to make your nutrients the most available to the plant.

It is my belief after reading what you have presented so far that your problem would go away if you accurately adjusted the pH of every fluid to hit your soil to 6.3 pH. 6.3 pH is where mathematically the most nutrients are the most mobile in soil, and I think you will get a much better response.

 

[Flambino]

Emilya, you helped through my very first grow, and when I wrote this post out, I was really hoping that you would post here. Thank you so much again for your insight.

 

[Flambino]

Ok I need help again, @Emilya if your around, I'd love your advice if you have a moment. After a week of fluids ph'ed to 6.3, I was seeing no signs of improvement- it's getting worse to be honest.. So I took my fancy new ph pen and stuck it in the runoff, only to discover that the runoff is 4.8. I began to flush that girl, and have since put about 15 gallons of water (6.3) through the soil and the runoff is still coming out at 4.9-5.0. I am starting to feel a bit lost here, and not sure what steps to take next, as I am under the impression that the soil should be at 6.3 for a healthy plant

 

[Emilya Green]

Ok I need help again, @Emilya if your around, I'd love your advice if you have a moment. After a week of fluids ph'ed to 6.3, I was seeing no signs of improvement- it's getting worse to be honest.. So I took my fancy new ph pen and stuck it in the runoff, only to discover that the runoff is 4.8. I began to flush that girl, and have since put about 15 gallons of water (6.3) through the soil and the runoff is still coming out at 4.9-5.0. I am starting to feel a bit lost here, and not sure what steps to take next, as I am under the impression that the soil should be at 6.3 for a healthy plant

What you are seeing in the runoff is the little fine pieces of sphagnum moss that the happy frog is made of. The soil has buffers in it to offset that, but it can really break down and show up in greater proportions in the runoff. Measuring runoff pH in soil is meaningless, and you should never make decisions like you did based on it, despite what the bro scientists are telling you.

So soil has many pH readings you might get, depending on if you are measuring wet soil or dry soil. Fox Farms soils are set to revert to 6.8 pH or so, when they are dry. When the soil is wet, the pH of the liquid it has absorbed more greatly controls the pH. What I am trying to say is that the soil's pH is not what you should have your eye on, because it is a constantly moving target... just make sure your incoming fluids are set to the right pH... 6.3 in soil.

So analyzing what you said, after a week of fluids (watering twice?) you see no improvement. One of those waterings should have been plain pH adjusted water, the other one nutes mixed in, also adjusted to 6.3. So you are saying that after one feeding and one watering, you don't see an improvement. I should remind you of the importance of patience when growing a plant. We have the ability to move 1000 times faster than our plants... but that doesn't mean that we should.
Give a few more feedings, and of course the waterings inbetween. Increase the amount of feed a little bit just in case you are not giving enough, but don't overdo it, especially now that you flushed all the nutrients out of there. Be patient, and lets see what 3 wet/dry cycles does with at least a couple of feedings in there.

 

[Flambino]

Ok. Thank you, I guess I have reverted back to helicopter parenting again like a newbie. Lol. I'll try a little patience and see what we get

 

[Flambino]

Update: they are vegging quite happily again. Thanks @Emilya!! You're the best!

 

[Flambino]

I need help troubleshooting one more time.. the leaves on my gorilla plant, are still canoeing, although all other issues seem to be resolved, this one plant is still giving me the curly leaf problem.
All fluids going in are at 6.3 ph, lights are at 22", and the Temps are 75° at canopy level. Rh is at 55. I have scoured Google to fix this problem myself.. however, for all the posts I have found regarding this issue... I can't seem to find any definitive answers as to what the actual cause is. Sorry I'm asking to be spoon fed knowledge here.. but I'm totally stumped

 

[Emilya Green]

Looks to be either too much heat or too much light at the top of the canopy. If you have a light meter, check to see that your LUX is not out of bounds for this age of plant. If it is too hot in there, get some more fan action going.

 

[Liqurd4tay0z]

I'm having a similar issue but with the downward curl of the serrated edges and only on the newest growth on all the bud sites...im stumped.

 

[Emilya Green]

I'm having a similar issue but with the downward curl of the serrated edges and only on the newest growth on all the bud sites...im stumped.

that sounds like a toxicity problem... when the leaves point toward the roots, there is something wrong with the feed... its either too strong or the pH is off

 

[Elvin]

I have yet to water them until there is run off,

That is within your first post.
Could that be your problem? You could have one heck of an accumulation of salts from your fertilizers.
Dump a bunch of water on them to flush out the accumulated salts.
You can buy stuff to "flush" and Fox Farm even makes something to help from the shock of the stuff they sell to flush with, but dumping a bunch of water on them until a few gallons comes out the bottom will work wonders.
Then start watering to run-off of at least 20% of the amount of water dumped on it.

If you can get it into your shower without it getting hurt nor you getting into too much trouble with the Better Half that is the easiest way to get the soil flushed but just dumping water on them where they grow works just as well.
A wet vac will clean it up or just use all the bath towels in your house. Hopefully, you have something to contain the water or you will have a mess.