Just switched to Jack's 5-12-26 with great results

rkymtnman

rkymtnman

Well-Known Member
jonnynobody said:
you sir were absolutely correct. Operator error. Son-bitch. I really screwed the pooch on that one
Click to expand...
my first guess was Silica since that is a known issue if mixed in the wrong order. but since you weren't using that...

glad you figured it out!

what is strange is that maxi uses calcium nitrate and calcium sulfate as their Ca sources. maybe it was how you were mixing it? and that the calimagic as calcium carbonate was just easier to dissolve as an additive? like i said, WAY over my pay grade.
 
J

jonnynobody

Well-Known Member
rkymtnman said:
my first guess was Silica since that is a known issue if mixed in the wrong order. but since you weren't using that...

glad you figured it out!

what is strange is that maxi uses calcium nitrate and calcium sulfate as their Ca sources. maybe it was how you were mixing it? and that the calimagic as calcium carbonate was just easier to dissolve as an additive? like i said, WAY over my pay grade.
Click to expand...
Well crap doodles. I just had a flashback of 8th grade pre algebra. Teacher ragged my ass about showing and checking my work. She mighta been on to something there :)

I didn't even notice calcium nitrate is the listed source of calcium for maxi. I think that dissolves my theory. Out of curiosity I'm going to fire off 2 emails to a couple separate State University horticultural departments with a list of the fertilizer ingredients for maxi bloom. I'll ask them if adding calcium nitrate or magnesium sulfate would negatively interact with any of the base ingredients that would result in precipitation. I'll briefly explain what I'm experiencing to give them a little background. I learned a long time ago you don't gotta be a genius to get the answers you need. You just need to know how to ask someone who is a genius in the area of expertise you need help in. Smart friends come in handy :)
 
1

1212ham

Well-Known Member
jonnynobody said:
That's actually not a bad little deal. I already had a large amount of epsom salt and calcium nitrate on hand so I just bought the 25# bag for $56 from grow green mi with free shipping. It was $59 if I remember right, however if I needed calcium nitrate and epsom salt I'd pull the trigger on that $35.99 deal any day. You'll get tons of res fills out of that little kit. And you don't need anything else. I mean nothing.
Click to expand...
Is this sequence of these instructions correct? In another thread some one spoke of making a base water solution with CaliMagic and epsom first, then adding Jack's.

Mix and dissolve each nutrient completely before adding the next nutrient.
1) Weigh and completely dissolve 3 grams Hydro 5-12-26
2) Weigh and completely dissolve 1 grams Magnesium Sulfate
3) Weigh and completely dissolve 2 grams Calcium Nitrate 15-0-0
 
J

jonnynobody

Well-Known Member
1212ham said:
Is this sequence of these instructions correct? In another thread some one spoke of making a base water solution with CaliMagic and epsom first, then adding Jack's.

Mix and dissolve each nutrient completely before adding the next nutrient.
1) Weigh and completely dissolve 3 grams Hydro 5-12-26
2) Weigh and completely dissolve 1 grams Magnesium Sulfate
3) Weigh and completely dissolve 2 grams Calcium Nitrate 15-0-0
Click to expand...
I do full strength jack's, but adjust according to your needs.
1) Dissolve 3.6g jack's 5-12-26 per gallon
2) Dissolve 2.4g calcium nitrate per gallon
3) PH adjust to 5.8
You don't need the additional magnesium sulfate. Jack's already has plenty at 6.3%. I was using it and recently omitted it. Plants look healthier.
 
L

Larry3215

Well-Known Member
jonnynobody said:
You don't need the additional magnesium sulfate. Jack's already has plenty at 6.3%. I was using it and recently omitted it. Plants look healthier.
Click to expand...
Interesting. Your the first person I have heard say that. My plants seem perfectly happy with the mag included. No signs of mag excess.

What PPM's are you running?

Im the odd man out with my aero system. I never get above EC 0.5-0.6 or 250-300 PPM - and that includes my tap water at 100 PPM. A buddy of mine grows the most beautiful plants I have ever seen and he runs that same exact mix in F/D at about EC 0.8-1.0 IIRC.

1212ham said:
Mix and dissolve each nutrient completely before adding the next nutrient.
1) Weigh and completely dissolve 3 grams Hydro 5-12-26
2) Weigh and completely dissolve 1 grams Magnesium Sulfate
3) Weigh and completely dissolve 2 grams Calcium Nitrate 15-0-0
Click to expand...
Yes - if your like me and find the mag is needed or at least does no harm.

Thats also the correct order to add the nutes to your rez. One key thing is to allow the jacks to mix well, then add the Mag and let it mix thoroughly before adding the calnit. Then add the calnit slooooooowly to avoid any possibility of precipitation.
 
TintEastwood

TintEastwood

Well-Known Member
Jacks "321" been working for years.

Different methods, minor tweaks.
Coco can rob some of the Ca.
I also cut or adjust the epsom, to keep it closer to 2:1. Ca:Mg.

Here's the Jacks elemental breakdown, including the epsom.

Jacks-100.PNG

tox-lockout.jpg


Maxi
On the subject of 1-parts that include Calcium Nitrate...

My best guess. I suspect they are coating the calnit to delay dissolving just enough to prevent precip and chit.

They probably did a much better job than Greenleaf with their Megacrop 1-part. Big fail imo.
 
Last edited:
J

jonnynobody

Well-Known Member
Larry3215 said:
Interesting. Your the first person I have heard say that. My plants seem perfectly happy with the mag included. No signs of mag excess.

What PPM's are you running?

Im the odd man out with my aero system. I never get above EC 0.5-0.6 or 250-300 PPM - and that includes my tap water at 100 PPM. A buddy of mine grows the most beautiful plants I have ever seen and he runs that same exact mix in F/D at about EC 0.8-1.0 IIRC.



Yes - if your like me and find the mag is needed or at least does no harm.

Thats also the correct order to add the nutes to your rez. One key thing is to allow the jacks to mix well, then add the Mag and let it mix thoroughly before adding the calnit. Then add the calnit slooooooowly to avoid any possibility of precipitation.
Click to expand...
3.6g/gallon jack's
2.4g/gallon calcium nitrate
With a PH adjustment to 5.8 using potassium hydroxide the resulting ppm is about 820 or approximately 1.6-1.8 EC. Every strain is genetically different. Some strains may need extra magnesium sulfate. Some strains may need more or less calcium nitrate. There's no hard and fast rule. You have to read your plants and adjust according to their needs. I presently have no need for the additional magnesium sulfate. That could change as I introduce new strains into the garden. This highlights one of the best parts about jack's 5-12-26. The nutritive profile is highly customizable according to the needs of your plants. I have never experienced any precipitation issues with Jack's. I recently held a veg reservoir for 7 days without issue. The PH remained stable at 5.8 for all 7 days.
 
J

jonnynobody

Well-Known Member
TintEastwood said:
On the subject of 1-parts that include Calcium Nitrate...

My best guess. I suspect they are coating the calnit to delay dissolving just enough to prevent precip and chit.

They probably did a much better job than Greenleaf with their Megacrop 1-part. Big fail imo.
Click to expand...
It seems like the 1 part systems are unreliable. I would never buy another. Live and learn. Then buy Jack's :)
 
TwistedGoat

TwistedGoat

New Member
I use Jack's and love it! I havn't been able to read through the thread yet but what I do is when my plant goes into flower I flip my nutrients from 1-2-3 to 3-2-1 and give less of N and more of the K I think it is and I have great results with that.
 
2

2com

Well-Known Member
arcalion said:
jacks is stable, but i find my water isn't stable so it takes like 1-2days of PH correcting the water to 5.8 for it to stay stable, probably because the chlorine dissipating and what not
Click to expand...
Do you have chlorine, or chloramine?
Rurumo said:
I would just throw into the mix that Maxibloom has no detectable levels of arsenic and cadmium, while Jack's does. Sourcing is one thing GH does right. I've been looking for a cost effective nutrient to use for my upgraded grow and looked into both of these formulas/companies. JR Peters, the Jack's company, says right on the front page of their website that their products are heavy metal free, which is a complete lie-that really rubbed me the wrong way, so I'm going with Maxibloom. Look up Jack's products here if you're curious, they're listed under JR Peters https://apps1.cdfa.ca.gov/fertilizerproducts/
Click to expand...
Been using that one for years, good that someone shared it. Nice one.
 
jimihendrix1

jimihendrix1

Well-Known Member
Doesnt Jacks also require 15.-5-5? Calcium Nitrate. I didnt read the complete thread.....

I know my Hydro Gardens Chem Grow
4-20-39 base formula requires 15.5-0-0 as part of the base formula. Makes it equal 19.5-20-39.... Calcium Nitrate has to be added 2nd in the mix after the base formula is thoroughly mixed.

After the CN Epsom Salts/Magnesium Sulfate is added for Mg, and Sulfur
Then in an 8 weeks flowering strain add MPK from weeks 2.5-5 after flip, and then boost the Epsom Salts weeks 5-6, and then cut in half in weeks 7-8.

Base formula is increased all the way through week 6. Then cut by 25% in week 7, then another 25% in week 8. In an 8 weeks flowering strain.

Chem Gro likes a PH of 6.2
 
J

jonnynobody

Well-Known Member
rkymtnman said:
the new Jack's RO or Tap formulas have worked great for me. 1 part. VERY pH stable.
Click to expand...
I almost bought the jack's RO formula. I opted for the 5-12-26 due to flexibility with the separation of the elements. However, that 1 part looks very attractive and I trust Jack's to get the formula correct where all of the elements dissolve and stay into solution. How are your plants doing with the RO formula? What PPM are you running it at, and are you supplementing the mix with anything else? I might have to give it a try one of these days as an experiment. Convenience is very appealing. I am doing this cycle with Jack's 5-12-26 and calcium nitrate only. No add on products at all.
 
You must log in or register to reply here.
Top