---
product_id: 82398119
title: "pH Down - 8 Oz"
brand: "general hydroponics"
price: "$816"
currency: MXN
in_stock: true
reviews_count: 8
category: "General Hydroponics"
url: https://www.desertcart.mx/products/82398119-ph-down-8-oz
store_origin: MX
region: Mexico
---

# Optimizes plant growth environment Liquid formula for fast absorption Precise pH adjustment pH Down - 8 Oz

**Brand:** general hydroponics
**Price:** $816
**Availability:** ✅ In Stock

## Summary

> 🌱 Master your garden’s pH game with precision and ease!

## Quick Answers

- **What is this?** pH Down - 8 Oz by general hydroponics
- **How much does it cost?** $816 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/82398119-ph-down-8-oz)

## 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

- • **Compact 8 Oz Size:** Ideal for both hobbyists and pros, fits anywhere
- • **Boosts Plant Health:** Create the optimal root zone for maximum growth
- • **Precision pH Control:** Dial in the perfect acidity for thriving plants
- • **Trusted Brand Reliability:** General Hydroponics, a name growers swear by
- • **Fast-Acting Liquid Formula:** Instantly balances pH for rapid nutrient uptake

## Overview

General Hydroponics pH Down is an 8-ounce liquid solution designed to lower pH levels efficiently, ensuring optimal nutrient availability and healthier plant growth. Trusted by over a thousand users with a 4.7-star rating, this compact, fast-acting formula is a must-have for any serious gardener or hydroponics enthusiast.

## Description

General Hydroponics pH Down - 8 Oz

Review: Does its job. - Did its job.
Review: Great product - Great product

## Features

- Sold on desertcart

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000FG0FA4 |
| Best Sellers Rank | #24,536 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #744 in Garden Fertilizers |
| Brand | General Hydroponics |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,081) |
| Global Trade Identification Number | 00793094015318 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Weight | 9.6 ounces |
| Item model number | GH1531 |
| Manufacturer | General Hydroponics |
| Number of Items | 1 |
| Product Benefits | Lowers pH levels for optimal plant growth |
| Product Dimensions | 6 x 2.5 x 2.5 inches |
| UPC | 793094015318 |
| Unit Count | 8.0 Fluid Ounces |

## Product Details

- **Brand:** General Hydroponics
- **Item Form:** Liquid
- **Item Weight:** 9.6 ounces
- **Product Benefits:** Lowers pH levels for optimal plant growth
- **UPC:** 793094015318

## Images

![pH Down - 8 Oz - Image 1](https://m.media-amazon.com/images/I/61m92HmZD3L.jpg)

## Questions & Answers

**Q: Why is it better to use this product to lower PH  vs using vinegar?  Thank you**
A: I cannot say for this product as I've been unable yet to find *what* is in this product.  As for vinegar: vinegar is acetic acid, usually 5%.  When any acid reacts with any base, there will be products.  When vinegar (acetic acid) reacts with calcium carbonate (usually the component of water which makes it "hard" and, I believe, alkaline) it has products (of course).  For example, sodium bicarbonate (baking soda) and vinegar react to produce CO2, H2O, and calcium acetate.  The CO2 is gaseous (hence the bubbles), the H2O is water (no kidding?), and the calcium acetate is...?  Searching online I find information that calcium acetate may be beneficial to plants (everyone should do their own reading).  So, I don't see why you (or I) cannot use vinegar other than that, if we do that, we don't keep the pH Down sellers in business.  On the other hand, sulfuric acid is commonly used to lower pH.  Sulfuric acid will have different products from the chemical reaction.  I do not know what those products are, but they must not be too bad as sulfuric acid is commonly used and, according to my reading, the sulfur we add to soil to lower the pH, does so by being converted to sulfuric acid.  Lots to this stuff.  But, for me, I'll try vinegar.

**Q: Will this kill living soil if used to oh the water? My water is very high ph out the tap.**
A: Nope this stuff works great with living soil

**Q: can this be used for soil?**
A: It is used to acidify the water which is a change in the ph of the water and the water, in turn, will be more acidic.  If you mean can you use it directly on dirt, then no.

**Q: What is the ph of the ph down so I could calibrate a ph meter?**
A: The product undiluted has a pH of 2.3

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does its job.
*by K***H on November 11, 2025*

Did its job.

### ⭐⭐⭐⭐⭐ Great product
*by J***E on January 1, 2026*

Great product

### ⭐⭐⭐⭐⭐ great for ph down
*by O***S on December 1, 2025*

amazing as always

## Frequently Bought Together

- General Hydroponics pH Down - 8 Oz
- PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium
- General Hydroponics CALiMAGic 1-0-0, Concentrated Blend of Calcium & Magnesium, Secondary Nutrient Deficiencies Helps Prevent Blossom End Rot & Tip Burn, Clean, Soluble, 1-Quart

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---

*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-25*