URGENT Question The beginning of the END again! Jack's, Coco DTW Grow problems

[sportyridr]

Hi guys...I am so frustrated...I have been unable to get this under control for 6 months now...there has been ZERO grows through my new 4 x 4 as this keeps happening and ends up cooking the leaves right off...I was growing packed tentfulls in my 32" x 32" tent prior to this.

That said, I thought I was doing this by adding gypsum for Calcium boost pre flower, I also thought I was doing this by a really hot Kelp Foliar but now....

This is happening with just the regular nutes I use and the breakdown is follows in HydroBuddy. Does something look out of whack here...these are the amounts per gallon and the breakdown...

There has been NO Foliar of any kind used, the amounts shown is the breakdown to make my mix come in at 1.2ec/gallon


Conditions:
Coco Coir/perlite 90/10% (brand new)
80*, no cold nights yet as they are on 24 hours
60% RH
1.2 ec
5.7 to 5.9 pH

Plants just up potted, half on Tues, half on Thurs and already showing issues this morning. The Purple Punch in the back right corner actually started before up potting, the others are following right along.

Here are some pics of this endless BS that's been going on for months now and at this stage.




Really at my whits end here, I have a lil bit of hair left but not much. Interestingly no other plants have done this that are growing elsewhere here. I am losing my effing mind...sure wish I had a buddy close with some knowledge to see what's goin on in person but alas...I need to ask you good folks and your years of knowledge for some help. My almost 4 years of growing can't get a grip on it.

This does not seem to be from up potting as the Purple Punch in the back has started this before doing so.

Sulfur?
Phosphorous?
Magnesium?
Calcium?

These are all things that I see going on here....am I not seeing something?

I have ruled out bugs as all the coco has been new but did scope the last time this happened and saw nothing.

Another question I have is about Sulfur, should the ppm's be as high as the Magnesium count is? (see breakdown above) I never noticed this until I started having these issues.

Thank you in advance for dropping your knowledge here to help me out...

Lastly I know it's crazy but I think this tent is cursed as ZERO plants have ever made it out of a grow since I bought it in August. It's not that but it does make me wonder wtf is up with all the bad JuJu ?

 

[sportyridr]

What’s your lighting looks like you may need less light.

I’m using straight jacks and some potassium silicate. Coco perlite I don’t mess with the coco I just plant and water.

My veg runs about 75f and high 60s rh. I tend to run on the small side for pot volume vs plant size. Large pots can evaporate water and your ppm will climb so you may have to take that int account.
Have used 321 and recently the max mix. 1000ppm. Plants seem to love it.
I reciently have turned my veg lights down I use equivalent to bridgelux 4000k strips.
I was getting yellow tops and fussy plants at around 15000 Lux. Back light way off and they seem way happier, like 6-7000 Lux. I thought they would stretch a lot more but they seem to still have good node spacing. I veg on 18”x4’ rolling shelving. And at the moment everything is full so I have some older veging plants beside and they are growing fine with the same ppm, I haven’t measured but they are Probly around 3000lux I think my max ppm is around 1000ppm.
I have a few plants that don’t like the high ppm Chocalope and my blueberry tend to claw so they get 500ppm.

I don’t see much for clawing in your plants wich would dictate over feeding. I’d dial the light back if your running max. Or even move a plant or 2 to less light as a test. Do a flush with 500ppm.

I decided to water all of the affected to runoff to look at the numbers

EC of the runoff was 3.5 so way out off the chart for newly up potted plants...never bothered with pH check as I made water for a full flush. We are now down to a 1.0ec and 6 pH and I have bumped the feed to 1.6 of straight 3-2-1 ratio with no adds until there is improvement

So the Viagrow Buffered Premium Coco Coir that I did not check any numbers on was just out of site high. I've had better bales of the cheaper stuff. So, it's on me for assuming it was going to be decent out of the bag.

No worries on the lights here, currently at 10ish K & 36" away...

Just reread, your feeding what 80%? What’s your water like? One other thing I use is pool shock. My well water is very high ppm so I use an ro. But I do get pathogens in my water so I use it as a preventative. How did your roots look at transplant nice thick white? Soggy thin brown?

3 grams A , 2 grams B, 1 gram Epsom is equal to 80% strength of the full Jack's Mix (prior to the updated feed schedule last year)

water is RO at 12ppm

root are fine as they were only up potted a cpl days ago

EC of supposed buffered & washed premium coco out of the bag was over 3ec...pretty sure after the flush we are going to be ok...hoping to see a turnaround fairly quickly now that we are at a much lower EC in the medium

Thanks for your input

 

[sportyridr]

I'll stick my two cents in............Your mix looks a little light on epsom salts....bring that to .7....maybe a little higher since you are in coco. Then I would suggest that you eliminate all the additives and just use the Jacks 321 formula. I think you are locking yourself out with the extra "stuff".

Agreed Willie, I've been using the updated numbers from Jack's with less Epsom and I feel it's been on the light side as well.

Going with str8 3-2-1 with no adds now after we flushed the crazy 3.5ec away down to a 1.0ec....maybe they can uptake some nutes now

Hoping to see vast improvement, thanks man!

 

[Buck5050]

It's been a minute since I grew a plant but when I did I used Jacks at the same ratios. Basic hydro set-up with perlite as a medium. I've seen this before and if I remember correctly, dropping my ph to 5.5 cleared the lockout. For me, pulling down the initial pH (5.5) allowed it to swing through the ideal range over time. Which usually is calcium, which is an immobile nutrient (top of plant/ newer growth) and better available for uptake at a slightly lower ph range in hydro. LED lighting can be a little tricky to adjust to with Jacks, felt like I fought Cal/Mag issues for awhile myself.

 

[sportyridr]

It's been a minute since I grew a plant but when I did I used Jacks at the same ratios. Basic hydro set-up with perlite as a medium. I've seen this before and if I remember correctly, dropping my ph to 5.5 cleared the lockout. For me, pulling down the initial pH (5.5) allowed it to swing through the ideal range over time. Which usually is calcium, which is an immobile nutrient (top of plant/ newer growth) and better available for uptake at a slightly lower ph range in hydro. LED lighting can be a little tricky to adjust to with Jacks, felt like I fought Cal/Mag issues for awhile myself.

ya man, I wasn't expecting washed & buffered Coco out of the bag to be over 3 ec, way high for any nute uptake...got 1/2 flushed last night, in midst of flushing the other half of the plants this morning...

thanks for your reply

 

[Willie]

Casual Observer who knows nothing about this product/regimen,,,,
Jack's 321 listed at 5-12-26
,,, so is actually 1- 2.5 -5 ?
Am I missing something?
Where does the 321 part come in?
Am I reading this correct?
If so , final ratio is 1.25 - 1 - 2.5

Am I off base?
Am I reading this wrong?

Formula looks N weak, as do photos.

These are the two parts from Jacks.A & B. Check out the part B bag............there's the nitrogen