Jack’s 3-2-1, explain it to me like I’m 5

canope

canope

Well-Known Member
So for my next grow I want to switch to Jack’s and want to make sure I do not mess this up, I’m still a newb and defficiencies are not so obvious to me yet.

this run I’ll be in coco, I have an automatic watering system from 1000L bin where I mix my nutes in, pictured bellow.
image.jpg
I run 24 LED lights on about 150 plants, I do flowering ONLY.

ps: big shoutout to everyone on RIU, you guys have helped me so much and I enjoy reading and learning from you guys every single day! Thanks fellow bros :)
 
I use Jack's daily or every other day. Its very important to mix it correctly and let each part totally dissolve. heres the amounts to use at 33%-100% hydro 1.2 grams, cal nitrate 0.83 grams, epsom 0.4 grams. 50% 1.8g, 1.25g, 0.60g, 80% 3.0g 2.0g 1.3g, 100% 3.6g, 2.5g, 1.2g. You can use Google to convert to tsp if needed but i prefer weighing it. Thats per 1 gallon of water
 
Here's my schedule
 

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I had great success with jacks. But it got a lot better when I added the root supplements. In the other picture
 
One thing I messed up when using Jacks was trying to mix in the rez. Start with a hot water bucket and at least mix the A and B separately in different buckets. These videos helped me out the most. Good luck!


 
Warm water is what I use and if you wait a few minutes between mixes 5-12-26:first then epsom and the 15-0-0, I actually use a different calcium. I found YaraLiva dissolves soooooooo much better. If you are interested in buying smaller lots ,i know a couple of sellers who sell pre packaged sizes from 4lbs and up
 
RonnieB2 said:
Warm water is what I use and if you wait a few minutes between mixes 5-12-26:first then epsom and the 15-0-0, I actually use a different calcium. I found YaraLiva dissolves soooooooo much better. If you are interested in buying smaller lots ,i know a couple of sellers who sell pre packaged sizes from 4lbs and up
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Can you post those 2 pics in full, I feel like that could help me alot. You're basically using what GreenGenes is using right? Thanks for the info man
 
This is what I came up with, let me know if this looks correct to you, afaik they are in the correct order




1000L = 264 GAL
g/1000L


Week 1 target ppm: 980

10-30-20 Bloom
1500

Epsom Salts
264

FLOWER week 2-6 ppm: 1175

5-12-26 Part A
975

Epsom Salts
264

15-0-0 Part B
645

LATE FLOWER week 7 ppm: 1040

7-15-30 Finish
1425

Epsom Salts
264


Week 8

Flush
 
Last edited:
RonnieB2 said:
Im doing chores, give me a bit.
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I found your feeding schedule so no need to re-post. But I do have a question, do you follow that chart to the dot with all the boosters or do you keep it simplified?

Here's the feed schedule for people that might be interested:
Screen Shot 2020-07-26 at 9.30.59 PM.png
 
So for a 1000L tank this would be it:


Per 1000L
PPM: 1000-1100
PH: 5.7-6.1
Armor Si is always first
Calimagic is second


Week 1-5
Armor Si: 660ml
Calimagic: 396ml - 660ml
15-0-0 jacks: 660g
5-12-26 jacks: 950g
Epsom salt: 317g

Week 6-7
Calimagic: 396ml - 660ml
15-0-0 jacks: 660g
5-12-26 jacks: 950g
Epsom salt: 317g

Week 8
15-0-0 jacks: 660g
5-12-26 jacks: 950g
Epsom salt: 317g

Week 9-10
Flush


Once a week boosters:

Fulvic acid: 132g
Recharge: 1320g
Tribus original: 528ml
Unsulfured Molasses: 3960ml
Neptunes harvest seaweed: 3960ml
 
Side note: Tribus original is outrageously expensive, let me know if you have any replacement product that would be cheaper
 
Recharge claims to have fulvic acid, molasses, and kelp. It probably has some of the same bacteria strains as Tribus too.

All you need is Recharge. The rest are just redundant.
 
canope said:
Side note: Tribus original is outrageously expensive, let me know if you have any replacement product that would be cheaper
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I used Tribus but I switched Southern AG fungicide for a few months and it seems fine. It does appear to leave a brown film in the reservoir though. For me though, I don't think either product is worth it. I'm going to try H2O2 to keep my rez clean as soon as I finish the current run.
 
I had to message you directly because notifications were not loading correctly. As stated in the message. I tweaked this list a little. I switched to Tribus Grow during veg, and Tribus bloom for flower. Instead of armor si, I use House and garden Root Excelurator and House and Garden Aminos and instead of raw 67% humic I use hum-bolt 8% liquid. No one, or too few have studied the effects of humic acids on how it effects cannabinoids. I found one laboratory study that was concerning, Ill find it and post it. Despite it increasing growth and yields. This study found it depleted THC, considerably. This was only one study, but it got my attention. Heres the entire study, from start to conclusions, you can judge for yourself https://www.frontiersin.org/articles/10.3389/fpls.2019.00736/full
 
Can anyone post the label for jacks hydro?
Its not available in UK without shipping in from US and every label online is blurred out .
Its not so much the NPK value but the micros I want to see.

Cheers.
 
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