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

maxmurder

Member
Veteran
I don't do exactly that ratio or keep it the same all of the time but I am still using the stock mix and its working really great (~700ppm). The Jacks seems to dissolve 98% of the way pretty quickly and there is always some residual. What I do now is not try to shake the hell out of it but just leave it alone for a few days, mixing it a bit here and there. Fully dissolves that way. The Cal-nit dissolves with zero issues.

i believe the numbers i quoted above get you right around 1.3ec....
 

maxmurder

Member
Veteran
no but mine has a mini bar.
a saw on the farm people making a stock solution using 145 grams calnit per qt and 220 grams per qt jacks hydro, then just using 10 mils per (each) gallon x how many gallons in res.
this seems simple have you (or anyone reading this) tried it?
i suck at math but i figured i could make 378 gallons of res from 1 gallon of stock solution which is waaaaay cheaper than buying micro, bloom and calmag.
i have the jacks but for some reason not pulling the trigger cuz my regular nute mix works great and has for years....

i made this with distilled gallons today (way easier than driving to hydro store)- will mix up tomorrow.
i'll get back with results...
 

Ichabod Crane

Well-known member
Veteran
i made this with distilled gallons today (way easier than driving to hydro store)- will mix up tomorrow.
i'll get back with results...

This is the exact ration I use in coco. Have used for about 5 years. Works great with hps. I have found that I need more under LEDs. You may need to use more under DE bulbs or with CO2 set ups.

This most likely came from a mix I posted several years ago. I have had many people thank me for posting it and saying it worked great for them.
 

maxmurder

Member
Veteran
This is the exact ration I use in coco. Have used for about 5 years. Works great with hps. I have found that I need more under LEDs. You may need to use more under DE bulbs or with CO2 set ups.

This most likely came from a mix I posted several years ago. I have had many people thank me for posting it and saying it worked great for them.

cool man thanks for posting it up- i'm looking forward to filling up my experimentation - station tomorrow and doing a side by side with my regular nutes. i'm in a coco/perlite media run to waste under gavi de's.
it's gg4 so maybe add a little magsulf?
 

maxmurder

Member
Veteran
i mixed up a 70 gallon res today.
my h20 was 0.3
after adding 700 mils of jacks hydro and 700 calnit (stock solutions) it was 1.3
i wish i could fast forward 60 days.
we'll see that's just 1 light , i have 4 others in that room on the usual micro/bloom/calmag, all gg4.
 

Tasty_Bud

New member
no but mine has a mini bar.
a saw on the farm people making a stock solution using 145 grams calnit per qt and 220 grams per qt jacks hydro, then just using 10 mils per (each) gallon x how many gallons in res.
this seems simple have you (or anyone reading this) tried it?
i suck at math but i figured i could make 378 gallons of res from 1 gallon of stock solution which is waaaaay cheaper than buying micro, bloom and calmag.
i have the jacks but for some reason not pulling the trigger cuz my regular nute mix works great and has for years....

I have been using Jacks for years also. Your numbers look right to me.
I mix 3 pounds (the limit per gallon) of Jacks 5-12-26 into 1 gallon of RO Water for A stock, and 2 pounds of Calnit into a gallon of RO Water of for part B.
Mix 10mils of each per gallon to achieve a perfect solution in your reservoir. Should be 900ppm @ .5 conversion, or, 1.7ec.
https://goo.gl/photos/wwLweHxjYj8ZUGpdA
https://goo.gl/photos/cHeHxJZ1WbEjPqJD6
 

Hookah79

Active member
Been using jacks with cal-nit in tap water(150 ppm),iam getting splashes of lime green on my leaves,with some brown on the edges.Some leaves have brown spots on them.There 3-4 strains in there.

Is this a cal-mag deficiency?

I was giving them 2.25 jacks and 1.5 cal-nit,950 ppm total,5.8 ph,when this discoloration started.I then started making the stock solution of jacks 880,cal- nit 580 and used it for 3 weeks with no change.

I am using royal gold coco in 10 gal pots.

What do you guys think?
 

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maxmurder

Member
Veteran
if you're using the .5 conversion then your e.c is 1.9 which is kinda high in my opinion, so i doubt it's a deficiency. your coco looks bone dry to me, if you let coco dry out like soil/peat you will fuck up your plants. i also use the same brand coco but they add perlite and basalt and call it tupur. measure the e.c. of your run off (and post it up here) and make sure your pH pen is calibrated.
i'm 2 weeks away from finishing my first run using these nutes (1.3 e.c.) and couldn't be happier, i have 4 lights on old nutes and 1 light on jack's and i can't see any difference.
 

caljim

I'm on the edge. Of what I'm not sure.
Veteran
I agree with Max....1.9ec is on the high side and it looks like your locking up. ..Ask me how I know. and your coco does look very dry, at least on top.

An ec of 1.3 is plenty to get you there. I'd flush them through at a lower ec and watch the new growth.
 

Hookah79

Active member
My ec hovers around 1.3 to 1.4 and that's with the .67 conversation.My tap comes in @ 150 ppm .3 ec. I feed/feed/water.Yes the coco does dry out every now and then.Especially when i got those big clones ,they were sitting in a 2 gallon pot of promix,so i wanted to build their root system thus wet and dry cycle ,i probably did let them dry too long.

I use aptus fasilitor in first feeding with jacks,then jacks again second feeding,water with recharge end of the week.So every 2 days,using a watering wand.

I am told since i use recharge,i am washing away the calmag,and that i have to add 5 ml of it to my reservoir every time i feed.So not sure if that's the issue since they're kush strains and they're calmag whores,and iam using coco.

I thought about going with the 321 route but i think that's more for RO water..

EDIT:Forgot to mention i do keep my humidity between ℅65 -℅75
 
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maxmurder

Member
Veteran
i don't know man i think aptus is complete bullshit snake oil. imo.
i don't know what recharge is.
i've been using tupur for dozens of lights for many years and i was told never to water coco, it fucks up the cation exchange capacity and would take 7-10 feedings of cal mag to fix.
the whole point of this thread is to use a simple, complete 2 part nutrient and like i said above i've given 1 light nothing but hydro/calnit for flower, no calmag, no pk boosters, no magic snake oil- just those two parts at 1.3 e.c., 5.8 pH.
imo- stop adding variables - just rock the 2 part on one plant if you can't let go of the bottles next time i guess.
don't run plain h202 until the end and even then i taper down.
feed every time, do not let your coco get dry, i bet you won't have this problem.
btw- i switched from canna coco to tupur because it has perlite and imo this helps with drainage so i can feed more often (6x a day in 5.5" pots) and it's half as much $.
 

Hookah79

Active member
Recharge is just some bennies that i give the plants on non feed day,so its not just plain water.Because how else would i be able to give them their teas.

I will check the ec of the effected plants and post it here.
On another note,i've been wanting to make the switch to tupur but was told the bud tastes better with their coco fiber brand.Thanks...
 

Hookah79

Active member
Checked the ec drop off on some of the plants,and it ranged from 1.8 to 2.9.So Max is correct.Gonna have to water more often or increase the amount,and hopefully it fixes the issue.


Waxi ,the perlite came from the promix that those clones were in (2 gallon pots).They were transplanted in coco ,and hydroton on the bottom.

So is anyone using any silica with their mix?
 
fixing to upgrade to DE 1000 watt bulbs. Sealed room with Co2 at 1200 ppm, air cooled room with mini split AC just open hoods.

what ratio of 5-12-26 and 15-0-0 would yall suggest?




Another thing I want to bring up is something in the 5-12-26 has changed now when you mix it the smell, and color is different and you get this black ring around the bucket see pic.
 

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JJ Lowe

Active member
Anyone here have experience with the growmore line? Im running their Mendocino powder line with solid results.
They have a 5-11-26 in their "Mendocino" line. Essentially the same as jacks with a few additives. Carbs, aminos, ect. Price is about the same as jacks from my local hydro shop.
I'm thinking of running it along with the jacks calnit. It should give the same results as the jacks 2 part with the added benifits added by the Mendocino line..anyone have opinions on this? Thx!


From the growmore Mendocino line.
Product Description

Grow More's Mendocino Producer's Choice line of fertilizers are the most advanced powders we've ever created. They are 100% water soluble formulas containing a properly balanced mixture of all essential plant nutrients with quality-enhancing elements; calcium, magnesium, DTPA/EDDHA Iron, carbohydrates, amino acids and no artificial dyes or colorings. This Mendocino line provides highly efficient, performance nutrients as a standalone base nutrient or as a vegetative and bloom stimulant. For use in soilless, hydroponic, organic soils and coco coir systems. Special soluble non-acidifying sulfur provides increase in chlorophyll formation and availability of potassium. High rainfall or excessive irrigation can cause sulfur deficiencies. Magnesium helps transport phosphate in the plant and is essential in chlorophyll.
 

linky

Member
I have been using Jacks for years also. Your numbers look right to me.
I mix 3 pounds (the limit per gallon) of Jacks 5-12-26 into 1 gallon of RO Water for A stock, and 2 pounds of Calnit into a gallon of RO Water of for part B.
Mix 10mils of each per gallon to achieve a perfect solution in your reservoir. Should be 900ppm @ .5 conversion, or, 1.7ec.
https://goo.gl/photos/wwLweHxjYj8ZUGpdA
https://goo.gl/photos/cHeHxJZ1WbEjPqJD6

I was wondering if you could do this, how long before the super concentrate should be used? It good for a few weeks to a month like this?
 

Hookah79

Active member
I was wondering if you could do this, how long before the super concentrate should be used? It good for a few weeks to a month like this?

Any longer than a couple of weeks and the mixture in jacks starts getting gooey,the cal-nit stays the same,and that's in 1 gallon of distilled water.
 

Lbman

New member
I just read this whole threat, all 56 pages, and didn't find what I was looking for, so I figured I would just ask. Does anyone use jacks blossom booster, and if so, how? I was told by jr peters to use blossom booster for the first 2 weeks of flower, then switch back to 5-12-26. I have also heard many people have had success alternating every feed between the two. I am about 3 weeks into flower, and I have been using the blossom booster with a 3-2-1 ratio, and things are looking good, but I do have a few pale plants. Any info about blossom booster, and how you use it, would be appreciated. Thanks.
 
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