---
product_id: 281501704
title: "Jack's 321 Hydroponic Nutrients Fertilizer Plant Food - 2 lb Kit"
brand: "generic"
price: "₨34074"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/281501704-jacks-321-hydroponic-nutrients-fertilizer-plant-food-2-lb-kit
store_origin: LK
region: Sri Lanka
---

# Feeds 150 gallons of nutrient solution True solution stability over time Precision weighed packets ±2% Jack's 321 Hydroponic Nutrients Fertilizer Plant Food - 2 lb Kit

**Brand:** generic
**Price:** ₨34074
**Availability:** ✅ In Stock

## Summary

> 🌿 Grow smarter, not harder — Jack’s 321 fuels your hydroponic success!

## Quick Answers

- **What is this?** Jack's 321 Hydroponic Nutrients Fertilizer Plant Food - 2 lb Kit by generic
- **How much does it cost?** ₨34074 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/281501704-jacks-321-hydroponic-nutrients-fertilizer-plant-food-2-lb-kit)

## Best For

- generic enthusiasts

## Why This Product

- Trusted generic brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bulk Ready:** Generous 2 lb kit supports up to 150 gallons of premium hydroponic solution.
- • **Hydro Harmony:** Formulated to stay fully dissolved, delivering nutrients efficiently without residue.
- • **Effortless Mixing:** Stepwise dissolving process guarantees optimal nutrient availability and plant uptake.
- • **Complete Growth Kit:** Includes all three essential components—5-12-26 base, Calcium Nitrate, and Magnesium Sulfate.
- • **Precision Perfected:** Accurately weighed packets ensure consistent nutrient strength every time.

## Overview

Jack's 321 Hydroponic Nutrients Fertilizer Plant Food is a precision-formulated 2 lb kit designed for hydroponic growers seeking reliable, long-lasting nutrient solutions. Featuring individually bagged, accurately weighed components (5-12-26 base, Calcium Nitrate 15-0-0, and Magnesium Sulfate), it supports up to 150 gallons of nutrient solution with proven stability and superior nutrient availability for thriving aquatic plants.

## Description

Jack's 321 Hydroponic Nutrients Fertilizer Plant Food - 2 lb Kit

## Features

- Jacks 5-12-26 Hydro formula was designed as a base foundation for hydroponic growing. Jack’s has proven ability to remain in true solution over long periods of time with excellent nutrient availability to plants.
- Accurately weighed packets (+/- 2% by weight) for making 150 gallons of Jack's 321 hydroponic nutrient solution (dependent on the desired strength).
- The kit includes individually bagged components: 16 oz. of Jacks Hydroponic 5-12-26 (Part A), 10.67 oz. solution grade Calcium Nitrate 15-0-0 (Part B), and 5.33 oz. solution grade Magnesium Sulfate (Epsom Salt).

## Product Details

- **Brand:** Generic
- **Item Weight:** 16 Ounces
- **Item Form:** Liquid
- **Specific Uses For Product:** Hydroponic,Plant Food
- **Manufacturer:** Jack's

## Images

![Jack's 321 Hydroponic Nutrients Fertilizer Plant Food - 2 lb Kit - Image 1](https://m.media-amazon.com/images/I/919niHt2RKL.jpg)

## Questions & Answers

**Q: Is it good for flowering cannabis**
A: yes works very well . my favorite part is there is no need to switch up the amount of different nutes for each stage of growth . simply 3g part 1 2g part 2 1g part 3 veg-flower

**Q: I am running a 17 gal hydroponic dwc set-up, will i mix per the instructions for each gallon of water?**
A: Yes, but remember you are not putting 17 gallons into the container. 
I have a 5 gallon stir stick from Lowe's that I use to measure the water with.
I made a line where I want the level to be and check it once a week.
Good luck with your garden. I use a 5" x 5" PVC fence post for my garden. 
I have 51 plants growing.

**Q: Does this change ph or keep it at a good level !?**
A: From the discussion thread at the link below, you can get an idea of the pH people measure after mixing (it's approximately 6).  I use it as-is, without adding anything to adjust the pH.  I suppose for some plants it might be necessary or helpful to adjust pH, but I never have. 
https://overgrow.com/t/jacks-321-hydro-discussion-questions-tips-etc/24078

**Q: Would like to know if this kit is organic? All my plants are organically grown and would like my hydroponics the same way? Thanks.**
A: As far as I know, yes it is. I have been using Jack's for almost two years now. I love it and my plants love it too.

---

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-18*