Jack's ClassicNutrients Hydroponic 5-12-26 Professional Fertilizer Part A, 25 lbs
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Jack's ClassicNutrients Hydroponic 5-12-26 Professional Fertilizer Part A, 25 lbs

4.8/5
Product ID: 67861012
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Details

  • Brand
    Jack's Classic
  • Item Weight
    25 Pounds
  • Item Form
    Powder
  • Coverage
    Full
  • Liquid Volume
    500
🌱5-12-26 Ratio
đź’§Water-Soluble
⚖️25 lbs Power

Description

🌿 Feed Your Green Dreams!

  • HYDROPONIC READY - Designed specifically for hydroponic systems, ensuring maximum growth.
  • EFFORTLESS MIXING - Just mix with water for a hassle-free feeding experience.
  • LONG LASTING SUPPLY - 25 lbs of concentrated power means fewer trips to the store!
  • MICRONUTRIENT BOOST - Packed with essential micronutrients for robust plant health.
  • OPTIMAL NUTRIENT BALANCE - Achieve the perfect 5-12-26 nutrient ratio for thriving plants.

Jack's ClassicNutrients Hydroponic 5-12-26 Professional Fertilizer Part A is a premium, water-soluble powder designed for hydroponic systems. With a balanced nutrient profile and added micronutrients, this 25 lbs fertilizer ensures optimal growth for greenhouse and controlled environment crops, making it a must-have for serious growers.

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Specifications

Liquid Volume500 Milliliters
Item Weight25 Pounds
Specific Uses For ProductHydroponic
Target SpeciesGreenhouse and Controlled Environment crops
CoverageFull
Item FormPowder

Have a Question? See What Others Asked

Is this product water soluable
Are they organic?
Do I need to add something to this if I am growing tomatoes (kratky method of hydroponics)?
can it be used in soil? If so at what rate?

Reviews

4.8

All from verified purchases

T**H

Jacks=great results cheep

Least expensive, for great results

O**.

Jacks is the best! Price and quality you just can't beat.

Jack's is all you need to grow great crops. I doing Jacks 321 in dwc in RO water.. Part A, Epsom Salt, and Cal-Nit. This stuff works so well that I bought big 25lbs bags. For about $200 bucks I have enough nutes that will last a small/hobby grower, like myself, many years. I only run about 800ppm max in flower and I run at least a 7 day flush of ph adjust RO water before harvest. I have no issues starting seedlings and clones directly in 300ppm of 3,2,1. I do add ph up powder to the mix to get it up to 6.0ph since I use RO water.

M**S

Can't say if it's the best

But since I've used it for so long I know the best mix that my garden likes. I don't use it for hydro, but for an outdoor garden and tweak the calcium nitrate to where each group likes and add extra nutrients for other plants that require it.This big bag will last me a few years since the garden isn't huge. Gotta vac seal the unused portion to keep it from absorbing moisture or the water will ruin the measurements.

D**W

If you're growing...

Jacks is my reccomendation. Stuff is cheap and works like a charm. My plant health is always perfect. I don't use bloom boosters and I'm bring home bigger crops than I was with more expensive line ups. Jacks 321 is where it's at.

T**R

I love Jacks and you will too

This is my go-to Part A fertilizer, even for hydroponics. Dry fertilizers are always a better value than the liquid in a bottle counterpart, and give you more control over your mix. Make sure to get the Part B and C fertilizers to maximize the potential of the fertilizer, and to find out what amount you need for your specific usage. The price tends to fluctuate a lot, and ends up being over $100 in the Summer, so it may be worth stocking up in the Winter when people are using fertilizers less. Even if the price is around $100 however, you're still going to be saving so much money compared to the alternatives.

J**Y

All I’ve used for years.

I’ve used the Jacks 321 formula for years.Simple and reliable.Makes my autoflower plants look like photos.They grow great!

V**E

Awesome

Great fertilizer

L**S

Got what it was

Had holes nutrient spilling out and box was beat up by Mike Tyson

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Jacks Classicnutrients Hydroponic 5 12 26 Professional Fertilizer Part 25 | Desertcart GB