FoxFarm Cultivation Nation pH Down - Liquid Nutrient Solution Adjuster for Hydroponic & Soil Gardens, Lowers pH Levels - 40% Citric Acid for Optimal Plant Growth (Pint)
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Availability:
In Stock.
Arrives
Monday, Apr 27
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Size: Pint (16 oz)
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. Its 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 youre 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
Brand: FoxFarm
Item Weight: 1 Pounds
Item Form: Liquid
Liquid Volume: 1 Pints
Specific Uses For Product: Hydroponic
Brand: FoxFarm
Item Weight: 1 Pounds
Item Form: Liquid
Liquid Volume: 1 Pints
Specific Uses For Product: Hydroponic
Manufacturer: Fox Farm
Number of Items: 1
UPC: 752289270130
Unit Count: 1.0 Count
Product Dimensions: 7.75 x 10.38 x 8 inches
Item Weight: 1 pounds
Department: Unisex-Adult
Item model number: FX17040
Date First Available: January 8, 2021
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Apr 27
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 1 Quart
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.
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Reviewed in the United States on July 10, 2024 by J-town
Size: 1 Quart
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
Reviewed in the United States on May 29, 2025 by Ally surrage Ally surrage
Size: 1 Quart
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.
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Reviewed in the United States on March 4, 2025 by Jonathan
Size: 1 Quart
Always happy with fox farm they make good products
Reviewed in the United States on December 5, 2025 by William E. Hearn
Size: Pint (16 oz)
Its not concentrated but not 80% water like some companies. I would purchase again
Reviewed in the United States on February 4, 2026 by Israel Santana
Size: 1 Quart
It works as it's supposed to. Make sure to use a little at a time as it's pretty much trial and error. But does do the job well.
Reviewed in the United States on April 11, 2025 by Richard L.
Size: 1 Quart
Wow! First time using this brand. With General Hydro’s pH down I had to use three times as much to get to the same pH on my tap water. I water multiple times per Day with runoff so I’m not very concerned about it being citric acid based and breaking down from microbes . Fantastic value, will last me three times as long and basically same price .
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Reviewed in the United States on August 15, 2024 by John B
Size: 1 Quart
I can't say that it doesn't work because it does. It will lower the Ph level. The problem I seem to have is that It will not hold it for very long. I can add a couple ml of this stuff to the DWC and it will be back up after a couple of hours. Is that normal? I don't know but it really annoying. Going to grab another pH down product and test it out.
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Reviewed in the United States on June 2, 2025 by Reggie