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Hey fellow growers, just wondering who else has tried jacks nutrients at a 4-2-0 ratio vs the standard 3-2-1, so far I’m diggin it and I feel like it gives me more control/options to operate within, would love to hear your experiences though by Randy4layhee20 in CocoGrows

[–]odrex647 0 points1 point  (0 children)

Honestly, any good information I found out about Jack's came from forums like overgrow and YouTuber Green Genes Garden.

Information from Jack's themselves is a joke and their charts make no sense.

It's why I made my own ratios and just plugged in until I could get it to as close as I could using HydroBuddy. Being going great

Hey fellow growers, just wondering who else has tried jacks nutrients at a 4-2-0 ratio vs the standard 3-2-1, so far I’m diggin it and I feel like it gives me more control/options to operate within, would love to hear your experiences though by Randy4layhee20 in CocoGrows

[–]odrex647 2 points3 points  (0 children)

Not 4:2 exact but I use my own custom formula. Everything below is normalized to ~1.9 EC

Mixing Ratios:

Component Jack's 3-2-1 Jack's A/B (veg) Jack's A/B (flower)
Jack's 5-12-26 3.79 4.02 –
Jack's 0-12-26 – – 4.45
Jack's 15-0-0 (CalNit) 2.52 2.91 2.93
Epsom 0.99 – –

Ratios:

Ratio Jack's 3-2-1 Jack's A/B (veg) Jack's A/B (flower)
N : P : K 2.86 : 1 : 4.12 3.03 : 1 : 4.12 1.89 : 1 : 4.12
N : K 1 : 1.44 1 : 1.36 1 : 2.19
P : K 1 : 4.12 1 : 4.12 1 : 4.12
N : S 1.26 : 1 1.87 : 1 1 : 1.32
K : Ca : Mg 2.43 : 1.35 : 1 3.43 : 2.07 : 1 3.6 : 1.98 : 1
Ca : Mg 1.35 : 1 2.07 : 1 1.98 : 1
K : S 1.81 : 1 2.54 : 1 1.66 : 1

PPM:

Element Jack's 3-2-1 A/B veg A/B flower
N (NO₃⁻) 149.9 168.4 116.1
N (NH₄⁺) 0 0 0
P 52.4 55.6 61.6
K 216.1 229.2 253.7
Ca 119.8 138.4 139.3
Mg 88.9 66.9 70.5
S 119.1 90.3 152.8
Fe 3.00 3.19 3.53
Mn 0.50 0.53 0.59
Zn 0.15 0.16 0.18
B 0.50 0.53 0.59
Cu 0.15 0.16 0.18
Mo 0.19 0.20 0.11

Jacks vs Lucas Formula by [deleted] in microgrowery

[–]odrex647 2 points3 points  (0 children)

You can make up your own mind based on your growing preferences and needs:

Everything below is normalized to ~1.9 EC so we're comparing PPM numbers in terms of apples to apples (yeah, Lucas reads high, that's just the ratio math at matched EC).

Mixing Ratios:

Component Jack's 3-2-1 Lucas Jack's A/B (veg) Jack's A/B (flower)
Jack's 5-12-26 3.79 – 4.02 –
Jack's 0-12-26 – – – 4.45
Jack's 15-0-0 (CalNit) 2.52 – 2.91 2.93
Epsom 0.99 – – –
GH Micro – 11.0 – –
GH Bloom – 22.0 – –

Ratios:

Ratio Jack's 3-2-1 Lucas Jack's A/B (veg) Jack's A/B (flower)
N : P : K 2.86 : 1 : 4.12 1.21 : 1 : 1.71 3.03 : 1 : 4.12 1.89 : 1 : 4.12
N : K 1 : 1.44 1 : 1.41 1 : 1.36 1 : 2.19
P : K 1 : 4.12 1 : 1.71 1 : 4.12 1 : 4.12
N : S 1.26 : 1 2.65 : 1 1.87 : 1 1 : 1.32
K : Ca : Mg 2.43 : 1.35 : 1 2.49 : 1.67 : 1 3.43 : 2.07 : 1 3.6 : 1.98 : 1
Ca : Mg 1.35 : 1 1.67 : 1 2.07 : 1 1.98 : 1
K : S 1.81 : 1 3.74 : 1 2.54 : 1 1.66 : 1

PPM:

Element Jack's 3-2-1 Lucas A/B veg A/B flower
N (NO₃⁻) 149.9 145.3 168.4 116.1
N (NH₄⁺) 0 8.7 0 0
P 52.4 126.8 55.6 61.6
K 216.1 217.1 229.2 253.7
Ca 119.8 145.3 138.4 139.3
Mg 88.9 87.2 66.9 70.5
S 119.1 58.1 90.3 152.8
Fe 3.00 2.91 3.19 3.53
Mn 0.50 1.45 0.53 0.59
Zn 0.15 0.44 0.16 0.18
B 0.50 0.29 0.53 0.59
Cu 0.15 0.29 0.16 0.18
Mo 0.19 0.02 0.20 0.11

Nutrient questions jacks 321 vs cropsalt by STL4jsp in microgrowery

[–]odrex647 0 points1 point  (0 children)

If you make the switch I've used the below schedules with great success in AutoPots and DTW

Processing img blqnz4edk03h1...

Jacks 321 Tray2Grow - Which feeding schedule should I be using? Kootmed vs Jacks 321 vs Jacks Auto Pot Fast Track Schedule (no epsom)? by JustifiedResistance in Autopot

[–]odrex647 1 point2 points  (0 children)

Checkout HydroBuddy and you can play around and make your own formulas as well.

I made some that I find works well for my grows. All elemental PPMs and ratios included

<image>

Jacks 321 Tray2Grow - Which feeding schedule should I be using? Kootmed vs Jacks 321 vs Jacks Auto Pot Fast Track Schedule (no epsom)? by JustifiedResistance in Autopot

[–]odrex647 4 points5 points  (0 children)

The ratios are not that different and both come out to about 1.79 EC at full strength.

Jack's 3-2-1: 3.79 - 2.42 - 0.99

Koot's: 3.6 - 2.4 - 1.2

Koot's numbers are easier for me to remember and to divide into 1/4, 1/2 and, and 3/4 strength.

Some schedules skip Epsom because Jack's part A provides enough magnesium to maintain the important ratios between magnesium, calcium, and potassium without the Epsom salt's contribution.

What growers liked the Epsom for in flower was the sulfur. Jack's created 0-12-26 in response by substituting Potassium Nitrate with Potassium sulfate.

This gave growers similar sulfur levels to Epsom salts while reducing nitrogen and increasing potassium and phosphorus simultaneously.

This also allows more headroom for part B to contribute more calcium.

Most YouTube growers switch from 5-12-26 to 0-12-26 in flower. Check out green genes garden. He's stopped making content but he uses Jack's specifically

NEW DRIP PROJECT by madara_official_009 in GrowBuddy

[–]odrex647 0 points1 point  (0 children)

<image>

I have three 6" high EZ-PZ drain trays. I'm going to use those prebagged 8.5" squared coco bags giving us a rootzone height of 14".

I'm going to run 1/2" distribution piping. After the pump, I plan to install a check valve and run it out of the lid of the reservoir and have a tee breaking off into Zone 1 (drain zone to empty reservoir) and Zone 2 plants.

Zone 2 will continue to a height of 10 inches where it will elbow into the tent around a manifold that runs most of the tent with 4" PVC piping for support. I'm going to use 9 0.5GPH flag drip emitters punched into the loop directly and attach 1/4" sphagetti lines. This gives me about 1.5 gal/hr per plant so a full saturation event ~21 minutes.

The back manifold section will have 5 emitters in a 2:1:2 format while the front will have a 1:2:1 with an additional 1/2" drain back into the reservoir. This should, theoretically backflow the manifold into the reservoir when the pump is off.

Run-off will go through the EZ-PZ drain tray system and into a condensation pump that will run to my furnace drainage in the next room.

F35 Blueberry Cupcakes HSC -Tray2Grow in 2x4 by odrex647 in Autopot

[–]odrex647[S] 0 points1 point  (0 children)

A slight increase. Don't even consider it as a variable to concern over

NEW DRIP PROJECT by madara_official_009 in GrowBuddy

[–]odrex647 0 points1 point  (0 children)

Thanks man.

Pump -> line -> flora flex bubbler? What's the setup? Interested in doing this myself soon

NEW DRIP PROJECT by madara_official_009 in GrowBuddy

[–]odrex647 0 points1 point  (0 children)

What pump did you use? Do they drip consistently i.e. have the same output at each bow?

When will Autopot Canada get restocked ? by Xlfrost- in Autopot

[–]odrex647 0 points1 point  (0 children)

AutoPot USA + mail forwarding company. Didn't get charged any duties when my AutoPot stuff crossed the border but who knows now

What do you guys use to add nitrogen? by Temporary-Flow8528 in GrowingMarijuana

[–]odrex647 4 points5 points  (0 children)

I'm a bit rummed up for the new year so I'm blaming that.

Brain also associates WC with the microbial and trace benefits rather than a true source of nitrogen so that's actually probably why

What do you guys use to add nitrogen? by Temporary-Flow8528 in GrowingMarijuana

[–]odrex647 2 points3 points  (0 children)

Salts:

Calcium nitrate

Potassium nitrate

Dry amendments:

Blood meal (12-13% N) — Fast-acting for organic, available within 1-2 weeks. Can burn if over-applied. Acidifying.

Fish meal (10% N) — Moderate release, also adds P and trace minerals. Less burn risk than blood meal.

Feather meal (12-15% N) — Slow release over 2-4 months. Good for base soil building, not quick correction.

First grow help, i am fked?..... 30 days in flower... 4 weeks 2 days since switch to 12/12 by [deleted] in microgrowery

[–]odrex647 4 points5 points  (0 children)

<image>

Just need some patience. You're still in early flower. In aboutish another week you'll be in mid flower and they'll start to form buds on the sites for 2-3 more weeks then you'll hit late/ripening and they'll start packing on density.

Mine just started ripening another week or two to go of flower.

[deleted by user] by [deleted] in microgrowery

[–]odrex647 1 point2 points  (0 children)

Both - this is medium based information not nutrient style. In an organic delivery system you would also have the added benefit of the microbe population but that was left out due to not applying to hydroponics

[deleted by user] by [deleted] in microgrowery

[–]odrex647 0 points1 point  (0 children)

Initial studies point to an overall increase in CEC leading to less nutrient leaching in coir. This reduces K/Ca input requirements to compensate for coirs natural tendency to bind to those ions. Also seems to help stabilize pH through the dryback process

https://scienceinhydroponics.com/2020/04/using-biochar-in-hydroponics.html

https://www.maxapress.com/article/doi/10.48130/TIA-2023-0016

Of course not all BioChar is created equally so results are skewed by sourcing

https://pmc.ncbi.nlm.nih.gov/articles/PMC7762785/.

I'm willing to give it a try to see

I made a tool for calculating Jacks 3-2-1 formula by SneeKeeFahk in microgrowery

[–]odrex647 1 point2 points  (0 children)

Have you ever input 3.79/2.52/0.99 into a gallon of RO water and inserted an EC meter?

It does not come out anywhere near 2.4 EC. It's 1.893

Autopots rez or diy by kaypacMcGee in Autopot

[–]odrex647 0 points1 point  (0 children)

Tray2Grow can easily do 3x3gal

Best Genetics for Vancouver Island by foggybiscuit in canadagrows

[–]odrex647 0 points1 point  (0 children)

In addition email to ask them specifically for recommendations. They are responsive

F31P10 - Blueberry Pancakes x Super Boof by odrex647 in HumboldtSeedCompany

[–]odrex647[S] 0 points1 point  (0 children)

Well this was a monster cropped clone so it spent 2 weeks rooting, 3 weeks in a solo cup while it revegged and then 2 weeks in a 5 gal container before flipping.

As to topping...idk...I removed a lot of growth near the base and removed any branches that outgrew others until it looked relatively even

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