---
product_id: 549018015
title: "FoxFarm Cultivation Nation pH Down - Liquid Nutrient Solution Adjuster for Hydroponic & Soil Gardens, Lowers pH Levels - 40% Citric Acid for Optimal Plant Growth (Pint)"
brand: "foxfarm"
price: "5816 kr"
currency: ISK
in_stock: true
reviews_count: 8
category: "Fox Farm"
url: https://www.desertcart.is/products/549018015-foxfarm-cultivation-nation-ph-down-liquid-nutrient-solution-adjuster-hydroponic
store_origin: IS
region: Iceland
---

# 40% citric acid power Instant liquid formula Precision pH control 5.6-6.8 FoxFarm Cultivation Nation pH Down - Liquid Nutrient Solution Adjuster for Hydroponic & Soil Gardens, Lowers pH Levels - 40% Citric Acid for Optimal Plant Growth (Pint)

**Brand:** foxfarm
**Price:** 5816 kr
**Availability:** ✅ In Stock

## Summary

> 🌿 Unlock the secret to thriving plants with precision pH control!

## Quick Answers

- **What is this?** FoxFarm Cultivation Nation pH Down - Liquid Nutrient Solution Adjuster for Hydroponic & Soil Gardens, Lowers pH Levels - 40% Citric Acid for Optimal Plant Growth (Pint) by foxfarm
- **How much does it cost?** 5816 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/549018015-foxfarm-cultivation-nation-ph-down-liquid-nutrient-solution-adjuster-hydroponic)

## Best For

- foxfarm enthusiasts

## Why This Product

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

## Key Features

- • **Citric Acid Boost:** 40% organic citric acid enhances nutrient uptake and plant vitality.
- • **Precision pH Mastery:** Maintain the ideal 5.6-6.8 pH range for unstoppable plant growth.
- • **Quick & Easy Adjustment:** Instantly balance your nutrient solution with simple, controlled dosing.
- • **Safe & Reliable Formula:** 60% inert ingredients ensure safe handling and consistent results.
- • **Versatile Growth Partner:** Perfect for hydroponic and soil gardens, indoors or out.

## Overview

FoxFarm Cultivation Nation pH Down is a powerful liquid nutrient solution adjuster featuring 40% citric acid to precisely lower pH levels between 5.6 and 6.8. Designed for both hydroponic and soil gardens, it enhances nutrient availability and supports optimal plant growth with quick, easy application. Its safe, non-plant food formula ensures reliable, consistent results for professional and hobbyist growers alike.

## Description

Buy FoxFarm Cultivation Nation pH Down - Liquid Nutrient Solution Adjuster for Hydroponic & Soil Gardens, Lowers pH Levels - 40% Citric Acid for Optimal Plant Growth (Pint): Fertilizers & Plant Food - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Effective but fleeting - I’ve been using Fox Farm pH Down to manage the acidity in my hydroponic garden, and a little truly goes a long way. It’s especially effective for quick adjustments when you’re working with standard setups. However, if you’re using tap water or have an organic system (I use bacillus along with some other beneficials for root rot), this might not be your best bet. The product’s effectiveness tends to wane faster under these conditions. The reason? It’s primarily citric acid-based, which organisms can metabolize quickly. This means it loses its pH-lowering power sooner than you might expect, leading to potential fluctuations in your system. For more stable pH control in organic setups, consider switching to a phosphorus-based pH down. This type will generally maintain its effects longer, keeping your garden’s acidity levels more consistent.
Review: Works fantastic - I use this in my hydroponic system everytime I feel it because my ph is super high where I live. It works amazing at dropping it to the perfect ph level. Lasts a long time. And has only impacted my plants in a good way

## Features

- PRECISION pH FOR LUSH GROWTH: Cultivation Nation pH down for plants maintains an appropriate pH range of 5.6 to 6.8. This solution is designed to easily lower the pH of nutrient solutions in any environment, enabling healthier growth for your plants
- CITRIC ACID POWER FOR NUTRIENT GAIN: With 40% citric acid, this organic pH down enhances nutrient uptake, acts as a natural preservative, & supports plant health. It’s effective for pH balance & improves nutrient availability without harming plants
- EASY AND INSTANT pH ADJUSTMENT: Shake well, take a pH reading, & add small amounts of pH DOWN fox farm fertilizers. Test after each addition until the desired pH is reached, as this method ensures an easy & effective balance for your nutrient solution
- GROW STRONG IN ANY SETTING: Cultivation nation fox farm pH down is versatile, working in hydroponic systems and soil gardens. Whether you’re growing indoors or outdoors, this pH adjuster ensures your plants receive the nutrients they need for optimal growth
- SAFE HANDLING, VISIBLE RESULTS: With 60% inert ingredients, Cultivation pH down hydroponic offers a non-plant food formula that's safe for regular use. Follow instructions for safe handling to achieve the right pH balance and ensure thriving plants

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08SJ6L179 |
| Best Sellers Rank | #14,306 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #427 in Garden Fertilizers |
| Brand | FoxFarm |
| Date First Available | January 8, 2021 |
| Department | Unisex-Adult |
| Item Form | Liquid |
| Item Weight | 1 pounds |
| Item model number | FX17040 |
| Liquid Volume | 1 Pints |
| Manufacturer | Fox Farm |
| Number of Items | 1 |
| Product Dimensions | 7.75 x 10.38 x 8 inches |
| Specific Uses For Product | Hydroponic |
| UPC | 752289270130 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** FoxFarm
- **Item Form:** Liquid
- **Item Weight:** 16 ounces
- **Liquid Volume:** 1 Pints
- **Specific Uses For Product:** Hydroponic

## Images

![FoxFarm Cultivation Nation pH Down - Liquid Nutrient Solution Adjuster for Hydroponic & Soil Gardens, Lowers pH Levels - 40% Citric Acid for Optimal Plant Growth (Pint) - Image 1](https://m.media-amazon.com/images/I/710FGabE3vL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Effective but fleeting
*by J***N on July 10, 2024*

I’ve been using Fox Farm pH Down to manage the acidity in my hydroponic garden, and a little truly goes a long way. It’s especially effective for quick adjustments when you’re working with standard setups. However, if you’re using tap water or have an organic system (I use bacillus along with some other beneficials for root rot), this might not be your best bet. The product’s effectiveness tends to wane faster under these conditions. The reason? It’s primarily citric acid-based, which organisms can metabolize quickly. This means it loses its pH-lowering power sooner than you might expect, leading to potential fluctuations in your system. For more stable pH control in organic setups, consider switching to a phosphorus-based pH down. This type will generally maintain its effects longer, keeping your garden’s acidity levels more consistent.

### ⭐⭐⭐⭐⭐ Works fantastic
*by A***E on May 29, 2025*

I use this in my hydroponic system everytime I feel it because my ph is super high where I live. It works amazing at dropping it to the perfect ph level. Lasts a long time. And has only impacted my plants in a good way

### ⭐⭐⭐⭐⭐ Best product on the market
*by J***N on March 4, 2025*

Fox Farm hands down makes the best grow products out there. This stuff is so potent. My tap water comes out around 7-8 ph, and I want 6. I have a 6L hydro system and only need 1/8th of a tsp of this, which actually brings it down to 4 ph. I thought my PH tester was broken so I bought a new one, and it gave the same readings.

## Frequently Bought Together

- FoxFarm Cultivation Nation pH Down - Liquid Nutrient Solution Adjuster for Hydroponic & Soil Gardens, Lowers pH Levels - 40% Citric Acid for Optimal Plant Growth (Pint)
- FoxFarm Cultivation Nation pH Up - Liquid Nutrient Solution Adjuster, Raises pH Levels for Hydroponic & Soil Gardens - Formulated with Potassium Hydroxide for Optimal Growth (Quart)
- FoxFarm Fertilizer Soil Trio Liquid Nutrient: Tiger Bloom, Grow Big, Big Bloom Bottles - (Pack of 3-1 Pint)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-28*