---
product_id: 597234180
title: "General Hydroponics pH Down Liquid Premium Buffering For Stability, 1-Gallon"
brand: "general hydroponics"
price: "₨81059"
currency: LKR
in_stock: true
reviews_count: 5
category: "General Hydroponics"
url: https://www.desertcart.lk/products/597234180-general-hydroponics-ph-down-liquid-premium-buffering-for-stability-1
store_origin: LK
region: Sri Lanka
---

# 1-gallon bulk size Food-grade phosphoric acid Precise pH control (5.5-6.5) General Hydroponics pH Down Liquid Premium Buffering For Stability, 1-Gallon

**Brand:** general hydroponics
**Price:** ₨81059
**Availability:** ✅ In Stock

## Summary

> 🌿 Master your grow with precision pH control!

## Quick Answers

- **What is this?** General Hydroponics pH Down Liquid Premium Buffering For Stability, 1-Gallon by general hydroponics
- **How much does it cost?** ₨81059 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/597234180-general-hydroponics-ph-down-liquid-premium-buffering-for-stability-1)

## Best For

- general hydroponics enthusiasts

## Why This Product

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

## Key Features

- • **Bulk Value Pack:** Generous 1-gallon size ensures long-lasting supply and excellent cost efficiency.
- • **Food-Grade Safety:** Formulated with premium food-grade phosphoric acid for safe, reliable use.
- • **Precision pH Tuning:** Easily adjust nutrient pH to the ideal 5.5-6.5 range for optimal plant health.
- • **Consistent Stability:** Promotes steady pH levels to maximize nutrient uptake and plant growth.
- • **Trusted Hydroponic Essential:** Backed by 4.7-star reviews and industry-leading reliability since 2012.

## Overview

General Hydroponics pH Down Liquid is a premium, food-grade phosphoric acid solution designed to lower and stabilize nutrient pH in hydroponic systems. Available in a cost-effective 1-gallon size, it ensures precise pH adjustment within the optimal 5.5 to 6.5 range, promoting healthier plant growth and consistent results trusted by thousands of growers since 2012.

## Description

The Acid formulation uses food grade Phosphoric acid to lower the pH to the proper level. Widely recognized as a consistent and reliable product.

Review: Great Value, worth the savings for sure by buying the gallon size. GH products are always reliable.
Review: Worked amazing for all my plants!

## Features

- Acid formulation uses food grade phosphoric acid
- Add when your nutrient pH is too high in order to lower the pH to the proper level
- Promotes pH stability
- Adjust by adding a little at a time
- Recommended pH for most plants is 5.5 to 6.5 pH

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000FG0F9U |
| Batteries Included? | No |
| Brand | General Hydroponics |
| Color | Orange |
| Customer Reviews | 4.7 4.7 out of 5 stars (3,299) |
| Date First Available | 8 August 2012 |
| Is Discontinued By Manufacturer | No |
| Item model number | HGC722125 |
| Manufacturer | Hawthorne Hydroponics, LLC |
| Number of Items | 1 |
| Product Dimensions | 15.24 x 15.24 x 30.48 cm; 907.18 g |
| Size | 1 gal |
| Usage | Hydroponic Plant Growth, pH Stability |
| Weight | 12 Pounds |

## Product Details

- **Brand:** General Hydroponics
- **Global Trade Identification Number:** 00793094015332
- **Item form:** Liquid
- **Item weight:** 2 Pounds
- **UPC:** 714863970218 793094015332

## Images

![General Hydroponics pH Down Liquid Premium Buffering For Stability, 1-Gallon - Image 1](https://m.media-amazon.com/images/I/71E-fJ-tlsL.jpg)
![General Hydroponics pH Down Liquid Premium Buffering For Stability, 1-Gallon - Image 2](https://m.media-amazon.com/images/I/71R4KBdLv7L.jpg)
![General Hydroponics pH Down Liquid Premium Buffering For Stability, 1-Gallon - Image 3](https://m.media-amazon.com/images/I/71fkDkIWm9L.jpg)
![General Hydroponics pH Down Liquid Premium Buffering For Stability, 1-Gallon - Image 4](https://m.media-amazon.com/images/I/618nRcRF4jL.jpg)
![General Hydroponics pH Down Liquid Premium Buffering For Stability, 1-Gallon - Image 5](https://m.media-amazon.com/images/I/31v9Fb2iWLL.jpg)

## Questions & Answers

**Q: What is the amount per gallon mixing ratio?**
A: I use up to 3-4ml per gallon sometimes, depending on my nutrients, water and stage of plant growth. It will vary depending on what you're growing and where your particular plant's needs fall on the nutrient/ph charts. For hydroponics/coir it is recommended by manufacturer to range between 5.5 and 6.5.

**Q: can you list ingredients with %.  Thank you!**
A: exact amounts are a trade secret however the MSDS on this states:Phosphoric acid 10 - 30%Ammonium dihydrogenorthophosphate 5 - 10%Citric acid 5 - 10%in comparison the dyna-gro ph down has:Phosphoric Acid H3PO4 33%Nitric Acid HNO3 11.5%That being said there are benefits to some of these ingredients. N-NitrogenP-PhosphorusK-PotassiumPhosphoric acid provides: PAmmonium dihydrogenorthophosphate provides: N and PCitric acid: other than lowering ph, does nothing useful. made from oxygen and hydrogen not in any usable form as far as I can find.Nitric Acid provides: NOverall either product seems to provide similar benefits.Dyna-gro is half the cost.

**Q: ingredients? Concentration?**
A: It’s not organic if that’s what you mean ingredients. I haven’t used this in a long time. I want to say I’d use like 20ml for 5 gallons. I switched to another branf

**Q: Is this safe for aquaponics systems?**
A: I would think so. I use it to lower the pH of the water I use to water my plants sometimes, both inside and out.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***D on 26 January 2026*

Great Value, worth the savings for sure by buying the gallon size. GH products are always reliable.

### ⭐⭐⭐⭐⭐ Review
*by P***T on 17 February 2026*

Worked amazing for all my plants!

### ⭐⭐⭐⭐⭐ Review
*by C***N on 16 January 2026*

Does what it says.

## Frequently Bought Together

- General Hydroponics pH Down Liquid Premium Buffering For Stability, 1-Gallon
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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-28*