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

[Budley Doright]

Ive not seen too much advantage in using a concentrate myself....

I use a 44 gallon res....when I fill it I put the fertilizer in a one gallon container and mix it until its in solution....

that one gallon goes in the trash can reservoir....

I have a cup that I use to measure..... I check the numbers now and then....but once the measurement is on its pretty easy..... and accurate.

 

[Huckster79]

Im waiting for my first to arrive.

I just got a tds meter. My tap was 360.....

Iv always ran heavy 16 sometimes with all the suppliments sometimes with none just base. Started in promix, now im in straight charged coco, have had no major issues nute wise, and few minor ones for sometime... always using this tap water.

Oh im in breathable pots, clothes hampers lined with weedblock fabric.

Am i going to be okay starting with the 321 program wirh that high of ppms? I just dont want to buy water! Any i save on jacks ill pay out in water...

 

[Huckster79]

Im excited to try it, now just worried about my water....

 

[Huckster79]

360 seems a bit high for jacks, mine starts around 150

I know, ive read the whole thread... and noticed that ppl struggle w jacks that have high pm water why is jacks fussy so to speak w water, what would make it run fine w H16 but gunna have problems w jacks? Pretty sure its calcium driving it up like that. Dont want to test right now as im probably moving my operation.

I cant afford RO would a simple carbon filter maybe pull me down enough?

 

[Huckster79]

I ordered a test kit but will test water where i will be not where im at, once they do thst whats happens do they help guide you on how to adjust a recipe to fit your profile? Or does it basically tell ypu either youre good to go or you need filtration as a bianary option?

 

[Miraculous Meds]

You could run ro, and add back 25% to 50% tap water. Problem with high tap ppm is the extra micros, when jacks is loaded already, and the extra bicarbonates, when jacks is perfectly balanced already.

 

[samiam]

Hey guys anyone using jacks in rockwool?
I had no problems in veg but I'm 10 days into flowering and getting rust/yellowing leaf margins.
So I upped the hydro to 500 ppm and calnit to 335 ppm.
I'm growing large 7 footers under several thousand watts of HPS in #7 pots fed twice a day.
Should I be adding Epson to my ro water?
Or was I just not feeding a high enough EC?

 

[Huckster79]

Why is jacks so picky on this? When my others not? Is because what I have h16 is void of those things and adding this will overload it?

Any thoughts on simply a carbon filter? May not get it to zero like to but.... may get it to acceptable level ???

 

[samiam]

Huckster try using a carbon filter to maybe get your tap water down to 250 that should work fine with the jacks,

 

[Huckster79]

Anyone ever try these online carbon filters? I see some are general use others designed for RV water simply attach hose to either side? Just curious if anyone ever tested their affectiveness

 

[samiam]

Use a KDF55/GAC filter setup like this

https://m.ebay.com/itm/Dual-Big-Blu...090010?hash=item4172cfb85a:g:Jy0AAOSwImRYlR9T

 

[Rabbi]

Anyone else have any issues with yellowing plants in first 1-3 weeks in flower or is it just me? Looks like a nitrogen def. Gets better every time though once week 4 hits.

I've read through this thread and noticed some mentioning using a 1:1 ratio for veg. Think I should run the same for first 3 weeks of flower?

I'm not trying to make this out as a Jacks issue as clearly from reading this thread it is not, just want to see if anyone else experienced anything similar and what they did to remedy it. Thx

 

[ADHDGrower]

Anyone else have any issues with yellowing plants in first 1-3 weeks in flower or is it just me? Looks like a nitrogen def. Gets better every time though once week 4 hits.

I've read through this thread and noticed some mentioning using a 1:1 ratio for veg. Think I should run the same for first 3 weeks of flower?

I'm not trying to make this out as a Jacks issue as clearly from reading this thread it is not, just want to see if anyone else experienced anything similar and what they did to remedy it. Thx

Are you using Coco? Depending on its State Coco can draw some Nitrogen the first few weeks. Jacks beeing very low in Nitrogen its also possible thats just not enough for your Strain. Some hungry Hybrids defi need more then that.

 

[ADHDGrower]

If the yellowing starts on the lowest older Leaves its likely to be not enough Nitrogen, if its starts at the very Top it could be Iron, which can also happen first Weeks in Coco.

 

[samiam]

I cut back to 1 gram cal nite and sup with 2 grams biomin calcium. After week 3 flower.

 

[Rabbi]

Are you using Coco? Depending on its State Coco can draw some Nitrogen the first few weeks. Jacks beeing very low in Nitrogen its also possible thats just not enough for your Strain. Some hungry Hybrids defi need more then that.

No I'm not using Coco(doing aeroponics) and it's the entire plants not just lower or upper leaves.

 

[eric2028]

Anyone else have any issues with yellowing plants in first 1-3 weeks in flower or is it just me? Looks like a nitrogen def. Gets better every time though once week 4 hits.

I've read through this thread and noticed some mentioning using a 1:1 ratio for veg. Think I should run the same for first 3 weeks of flower?

I'm not trying to make this out as a Jacks issue as clearly from reading this thread it is not, just want to see if anyone else experienced anything similar and what they did to remedy it. Thx

I had yellowing issues in veg and early bloom. Switched to:
3.7 grams/gal of 5-12-26
3.0 grams/gal of calnit
1 grams/gal of epsom
Corrected all issues I had going on with this recipe. After stretch I just cut back on calnit alittle.

 

[Rabbi]

I had yellowing issues in veg and early bloom. Switched to:
3.7 grams/gal of 5-12-26
3.0 grams/gal of calnit
1 grams/gal of epsom
Corrected all issues I had going on with this recipe. After stretch I just cut back on calnit alittle.

Thx eric, this is exactly the type of feedback I was hoping for.

I myself make stock solutions so think I'm going to try a 1:1 ratio for the first 3 weeks and than switch to the 1:67 and see how it works out.

 

[Huckster79]

Im new to jacks, real happy so far! I have two twins of gg4, one in a basic ppk rig another in breathable container of coco and One gg4 and bubba cush cross in breathable coco container, shes much larger than other two, same age roughly she was from seed and much more vigerous. Flipped em 1/1/18 I fed crazy light in veg trying to keep her from growing me out of room. First feed in flower was 370ppm of 5-12-26 and added calnit to about 600ppm. The gg4 rocking it my bubba glue got N claw bad almost immediately. I fed her a straight water with heavy run off, shes perking right back up. My question now is to water down the whole mix for her or just back down the calnit?

 

[bsgospel]

Tough to say but initially I would use a diluted solution entirely. If it still persists, then drop the calcinit a few ppm. Less work for you until you figure it out...