---
product_id: 67861012
title: "Nutrients Hydroponic 5-12-26 Professional Fertilizer Part A, 25 lbs"
brand: "jack's classic"
price: "$7595"
currency: MXN
in_stock: true
reviews_count: 8
category: "Jack's Classic"
url: https://www.desertcart.mx/products/67861012-nutrients-hydroponic-5-12-26-professional-fertilizer-part-a-25
store_origin: MX
region: Mexico
---

# Water-soluble powder for max yield Clear mixing rates for perfect feed 5-12-26 precise nutrient ratio Nutrients Hydroponic 5-12-26 Professional Fertilizer Part A, 25 lbs

**Brand:** jack's classic
**Price:** $7595
**Availability:** ✅ In Stock

## Summary

> 🌱 Grow smarter, not harder — Jack’s Classic fuels your green empire!

## Quick Answers

- **What is this?** Nutrients Hydroponic 5-12-26 Professional Fertilizer Part A, 25 lbs by jack's classic
- **How much does it cost?** $7595 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/67861012-nutrients-hydroponic-5-12-26-professional-fertilizer-part-a-25)

## Best For

- jack's classic enthusiasts

## Why This Product

- Trusted jack's classic brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bulk 25 lbs Value Pack:** Cost-effective, long-lasting supply perfect for serious growers and hobbyists alike.
- • **Hydroponic-Ready Formula:** Designed specifically for hydroponic systems with easy-to-follow mixing instructions.
- • **Precision Nutrient Balance:** Optimized 5-12-26 formula fuels robust growth across diverse crops and environments.
- • **Micronutrient Boost Included:** Complete nutrition with essential micronutrients—no extra feeding needed.
- • **Ultra-Efficient Water Solubility:** Powdered concentrate dissolves instantly, stretching your investment further than liquids.

## Overview

Jack's Classic Nutrients Hydroponic 5-12-26 Part A is a professional-grade, water-soluble powdered fertilizer designed for hydroponic systems. Featuring a precise 5-12-26 NPK ratio with added micronutrients, it ensures optimal plant health and growth without extra feeding. The 25-pound bulk pack offers exceptional value and longevity, making it ideal for both hobbyists and serious growers seeking consistent, high-quality results.

## Description

desertcart.com : Jack's Classic Nutrients Hydroponic 5-12-26 Professional Fertilizer Part A, 25 lbs : Patio, Lawn & Garden

Review: 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.
Review: works well, good value - great part A fert. works well in the 3-2-1 system, easy to fix, stable formula for all your growing needs, tomatoes, potatoes and cannatoes

## Features

- 5-12-26 Analysis - Supplies a specific balance of macro, secondary, and micronutrients for many different growing environments and crop types.
- Water-Soluble Powder – Powdered concentrates go further than liquid fertilizers. Simply mix your measured powder with water and you are ready to feed with multiple gallons of liquid fertilizer!
- Mixing Rate – Proper mixing ratios are supplied on the bag for optimal feeding.
- Micronutrients - Added micronutrients supply your plant with the nutrition it needs for optimal growth and health. Unlike other fertilizers, additional feeding is not required.
- Continuous Liquid Feed Program – Intended for use with hydroponic systems. Mixing instructions by volume included.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07CWXTJ6X |
| Best Sellers Rank | #55,003 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1,324 in Garden Fertilizers |
| Brand | Jack's Classic |
| Customer Reviews | 4.8 4.8 out of 5 stars (386) |
| Is Discontinued By Manufacturer | No |
| Item Form | Powder |
| Item Weight | 25 pounds |
| Item model number | 79030 |
| Liquid Volume | 500 Milliliters |
| Manufacturer | JR Peters |
| Number of Items | 1 |
| Product Dimensions | 14.1 x 3.2 x 24 inches |
| Specific Uses For Product | Hydroponic |
| UPC | 671341790303 |
| Unit Count | 400.0 Ounce |

## Product Details

- **Brand:** Jack's Classic
- **Item Form:** Powder
- **Item Weight:** 25 Pounds
- **Liquid Volume:** 500 Milliliters
- **Specific Uses For Product:** Hydroponic

## Images

![Nutrients Hydroponic 5-12-26 Professional Fertilizer Part A, 25 lbs - Image 1](https://m.media-amazon.com/images/I/71tIae-eNvL.jpg)

## Questions & Answers

**Q: Is this product water soluable**
A: Yes it is. It is very soluable. 

I reccomended running it at these ragione.

Part A : 3g/gallon
Part B : 2g/ gallon
Epsom Salt: 1g/gallon 

And if you are using RO water, add 5ml/gallon Calimagic to this mix.  It works fangastic.

**Q: Are they organic?**
A: No

**Q: Do I need to add something to this if I am growing tomatoes (kratky method of hydroponics)?**
A: Yes, calcium nitrate must be dissolved separately. It is also called Jack's part B, or 15-0-0 (Ca-19%), use a greenhouse brand like jacks, Powergrow, or Yara. I have found the super cheap brands (eg southernAG, highYield) may be coated with insoluble goop, or otherwise contaminated.
The two parts must be diluted before mixing or the calcium and sulfur will form gypsum and gypsum is only mildly soluble so can settle out of a concentrate and is then very hard to redissolve.

**Q: can it be used in soil? If so at what rate?**
A: Absolutely...same rate as hydro is fine. If your using it for canna I increase slowly and like keeping it under 1000ppm cus I use dry amendments as well. Jack's also has a line of boosters

## Customer Reviews

### ⭐⭐⭐⭐⭐ Jacks is the best! Price and quality you just can't beat.
*by O***. on August 3, 2024*

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.

### ⭐⭐⭐⭐⭐ works well, good value
*by J***N on October 2, 2021*

great part A fert. works well in the 3-2-1 system, easy to fix, stable formula for all your growing needs, tomatoes, potatoes and cannatoes

### ⭐⭐⭐⭐⭐ Super Feeds spring plants
*by L***R on March 27, 2024*

Getting plants are flowers ready for spring. The jacks is the perfect starting food.

## Frequently Bought Together

- Jack's Classic Nutrients Hydroponic 5-12-26 Professional Fertilizer Part A, 25 lbs
- Jack's Classic Nutrients 15-0-0 Part B Water-Soluble Fertilizer for Calcium Uptake and Strong Leaf Growth in Continuous Liquid Feed Programs, 25Lbs

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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-01-30*