A question for the growers using Jacks 5-12-26

[Rabbi]

I had to buy a new tds meter yesterday because I accidentally broke my other one and noticed the 2 were quite a bit off and I ended up feeding them a lot more than previously this time to get to 600ppm. Perhaps under feeding was the problem the whole time. find out soon anyway.

 

[samiam]

Are using the 3 2 1 method Jacks, calcnit, Epsom?
Some plants do fine without extra mag, but some i grew need extra mag.

 

[p0opstlnksal0t]

I'm running Jacks 3, calcinit 2 and agsil @ .1 ec right now. Will be trying fulvic acid soon

 

[Desert Hydro]

i think its more of a pH equation than anything. in active hydro i stayed around 5.8-6 and everything was great. i tried the same in coco and experienced deficiencies like crazy. not that there isnt enough in there, but the pH for coco needs to be 6.2-6.4 range i think. since changing my plants are improving steadily. they were looking like shit there for a while lol

been hitting them heavy with foliars and adding mag to the mix now. i think from now on i will just run the 321 with a couple additives and thats it. at least my roots are healthy. thats a great sign.

 

[Miraculous Meds]

I had to buy a new tds meter yesterday because I accidentally broke my other one and noticed the 2 were quite a bit off and I ended up feeding them a lot more than previously this time to get to 600ppm. Perhaps under feeding was the problem the whole time. find out soon anyway.

Im sure this is likely it. Jacks has plenty of magnesium in it already. Id run a fresh batch of jacks/cal nit at 1.4ec with no extra mg, and see if they don't green up right away.

 

[Rabbi]

Are using the 3 2 1 method Jacks, calcnit, Epsom?
Some plants do fine without extra mag, but some i grew need extra mag.

As of yesterday yes. Up to yesterday it was just the Jacks and Cal/nit.

 

[Rabbi]

Im sure this is likely it. Jacks has plenty of magnesium in it already. Id run a fresh batch of jacks/cal nit at 1.4ec with no extra mg, and see if they don't green up right away.

Well I just ran a fresh batch yesterday with the extra mg so we'll see what happens. If things start greening up than next week I'll try without and see what happens. But I'm hoping your right though. I could easily see it being under feeding. They did look that way.

 

[beta]

i think its more of a pH equation than anything. in active hydro i stayed around 5.8-6 and everything was great. i tried the same in coco and experienced deficiencies like crazy. not that there isnt enough in there, but the pH for coco needs to be 6.2-6.4 range i think. since changing my plants are improving steadily. they were looking like shit there for a while lol

imo your problem is the Blumats, not the pH. I pH my rezs to 5.6 and never have issues. Coco needs regular watering, and Blumats don't really provide enough. Blumats are great for soil, but nothing beats a traditional drip system for coco.

Every time I've ever had a 'deficiency' type issue in coco, the solution has been more frequent watering. Give it a shot!

 

[samiam]

The only way I could completely get rid of mag deficiency in Coco was to cut it with a little peat, or mix it 50/50 perlite/coco.

And I will say that the more often I watered the less issues I had. That's why I say start in a small pot. Like once a day watering in veg. Good amount of light in veg with plenty of air movement and 70%+ RH.

Veg room environment is just as important as flower room.

 

[eric2028]

So I’m wondering if jacks nutes produces the same potency meds as other nutrient lines. I wonder because my Gorilla Glue has tested as high as 28% thc grown in promix with ionic nutes. The same strain grown in tupar coco with jacks tested out at 18%. I understand there’s a lot more to the whole picture besides nutes but does it make even a small difference?

 

[maxmurder]

So I’m wondering if jacks nutes produces the same potency meds as other nutrient lines. I wonder because my Original Glue has tested as high as 28% thc grown in promix with ionic nutes. The same strain grown in tupar coco with jacks tested out at 18%. I understand there’s a lot more to the whole picture besides nutes but does it make even a small difference?

same lights same rooms temps humidity same c02 ppm?

 

[eric2028]

same lights same rooms temps humidity same c02 ppm?

No actually the 18% sample had an ideal environment the entire time, supplemental co2 and new bulbs. Not to mention the coco harvest averaged north of 2 units/light(1000 watt). I’m curious about what others have tested out at with jacks.

 

[Treetroit City]

My highest test results came with jacks. Tresdawg at 30% thc and Headbanger at 26%

 

[Rabbi]

So almost a week in since trying the 3-2-1 method and measuring by ppm this time(new meter as well) and the verdict is....new plants slowly starting to turn yellow and the older plants remain yellow as fuck

I'm almost ready to throw in the towel on Jacks and go back to AN(as much as I don't want to). I made a brand new stock solution tonight from brand new bags of Jacks and gonna try a 1:1 ratio this week and bump the ppm up to 800(400 each). If that doesn't work I'll have no choice but to move on. Sucks, as I really wanted things to work out with Jacks.

I'll post another update next week again.

 

[Speed of green]

So almost a week in since trying the 3-2-1 method and measuring by ppm this time(new meter as well) and the verdict is....new plants slowly starting to turn yellow and the older plants remain yellow as fuck

I'm almost ready to throw in the towel on Jacks and go back to AN(as much as I don't want to). I made a brand new stock solution tonight from brand new bags of Jacks and gonna try a 1:1 ratio this week and bump the ppm up to 800(400 each). If that doesn't work I'll have no choice but to move on. Sucks, as I really wanted things to work out with Jacks.

I'll post another update next week again.

not sure if this has been answered yet but what scale does your ppm meter read in?.5.7?

also if youre in veg i would foliar the magsul

 

[Rabbi]

not sure if this has been answered yet but what scale does your ppm meter read in?.5.7?

also if youre in veg i would foliar the magsul

My meter is set on the "500 scale". It can be switched to 700 scale or EC though.

My veg is fine right now because I'm still using AN for veg. When I tried Jacks in veg they all turned yellow as well so I switched back with the plans of hammering things out first in flower and than coming back to figure things out in veg.

I have no idea why things aren't working out for me with Jacks but bottom line is that it isn't. Super disappointed tbh. Was so hoping to get away from watered down, high priced nutes like AN. Sucks.

 

[Budley Doright]

Somewhere earlier I post what peters recommended for 10 gallons....its by weight.....

I use a 44 gallon container so I adjust the weights....

When I mix up a batch I go by weight..... then I validate with the meter to make sure im about 650.....

plants look great....

I would suggest using only EC...... no confusion....

 

[Rabbi]

Somewhere earlier I post what peters recommended for 10 gallons....its by weight.....

I use a 44 gallon container so I adjust the weights....

When I mix up a batch I go by weight..... then I validate with the meter to make sure im about 650.....

plants look great....

I would suggest using only EC...... no confusion....

I was doing weight before last week. Plants looked like shit lol. I'm stumped tbh.

 

[Speed of green]

hmm

you are using r/o water?

i mix jacks calcnit equal parts by volume.

never measured it by weight.

i had poor results making stock solutions, there was fallout in the bottom of the containers.

i know it can be frustrating when things arent going right, maybe try using jacks on one plant until you get a method figured out.

if you want i can walk you through how i mix it.

 

[p0opstlnksal0t]

hi, mixing equal weight is wrong. their instructions show several ways to mix it.

they recommend equal volume.

however, as snook mentioned, the best way to mix is by ec or ppm.

you also won't need any magnesium sulfate, the base formula has over 6% magnesium.

i'm going to assume that you don't have a meter and that's why you are talking about mixing by weight.

if you take a 1/4 teaspoon plus a 1/8 teaspoon of each, 3/8 teaspoon total of each, you will get approx 750 ppm or ec 1.5. this is per gallon.

if you do have a meter, you don't need to measure water volume.

600 ppm is 360 ppm jacks and 240 ppm calcinit 240/360=.67

750 ppm is 450 ppm jacks and 300 ppm calcinit 300/450=.67

900 ppm is 540 ppm jacks and 360 ppm calcinit 540/360=.67

i cannot imagine a situation where you will need a solution stronger than this.

i have grown a 22.5 oz plant in a 3.5 gal container of coco with 600 ppm for life with no displays or problems, no additives or boosters or even ph adjusters.

if you mix it properly you won't have any ph issues.

the ratio is 1/.67 jacks/calcinit

d9

see above quote