General Hydroponics pH Down Liquid Premium Buffering For Stability, 1-Gallon
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Availability:
In Stock.
Arrives
Sunday, Aug 24
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Size: 1 gal
Style: pH Down
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
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.
Brand: General Hydroponics
Item Weight: 2 Pounds
Item Form: Liquid
Coverage: Medium
Liquid Volume: 1 Gallons
Brand: General Hydroponics
Item Weight: 2 Pounds
Item Form: Liquid
Coverage: Medium
Liquid Volume: 1 Gallons
Mixing ratio: Add X mL per X liters of nutrient solution
Specific Uses For Product: Hydroponic gardening, pH level adjustment for plant growth
Target Species: Add when your nutrient pH is too high in order to lower the pH to the proper level
Global Trade Identification Number: 32
Manufacturer: Hawthorne Hydroponics, LLC
Number of Items: 1
UPC: 714863970218 793094015332
Unit Count: 128.0 Fluid Ounces
Product Dimensions: 6 x 6 x 12 inches
Item Weight: 2 pounds
Item model number: HGC722125
Is Discontinued By Manufacturer: No
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Aug 24
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 1 quart
Style: pH Down
Fantastic, best part is that it’s very concentrated. My tap water is about 8.2 out of the faucet, and 1/8 teaspoon per gallon of water brings it down to 6.9-7. Highly recommend for any gardening application.
Reviewed in the United States on May 27, 2025 by Amazon Customer
Size: 1 quart
Style: pH Down
So, you've taken the plunge and bought a pH monitor, thinking you're all set to embark on your hydroponic journey. But then it hits you—monitoring is only half the battle. Fear not, fellow green thumbs and budding botanists, for I have found the yin to your pH monitor's yang: General Hydroponics pH Down.This product is, in a nutshell, a gardener's best friend. It's like having a magic elixir at your fingertips, ready to correct any alkaline audacity your water dares to exhibit. With just a few drops, you can bring your solution from the precarious heights of pH imbalance down to the serene valleys of perfect acidity. And why is this important, you ask? Because your plants are picky eaters, and pH Down ensures they get the nutrients they crave in a form they can absorb.Now, let's talk about ease of use. General Hydroponics has somehow managed to bottle simplicity itself. A little goes a long way, and with the detailed instructions provided, you'll feel like a pH wizard in no time. But remember, with great power comes great responsibility. Always monitor your pH levels to avoid turning your hydroponic setup into an acidic wasteland.Durability isn't usually a word associated with liquid products, but in this case, it's about the lasting impact pH Down has on your system. Consistent use helps maintain an optimal environment for your plants, contributing to their health and vitality over time. This isn't just a quick fix; it's a long-term solution for sustainable growth. In essence, General Hydroponics pH Down is the silent guardian of your hydroponic system. It works flawlessly with your new pH monitor, ensuring that your plants thrive in an environment tailored to their needs. If you've invested in monitoring your system's pH, investing in pH Down is a no-brainer. It's like buying a shield to accompany your sword, preparing you fully for the battle against pH imbalance. I wouldn't dream of running my hydroponic system without it.
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Reviewed in the United States on April 2, 2024 by Sean Callahan
Size: 1 quart
Style: pH Down
This is a great item and it works well when pH down yourwater I recommended
Reviewed in the United States on July 19, 2025 by Linwood l Bryant Jr
Size: 1 quart
Style: pH Down
Used regularly for many years, highly recommended
Reviewed in the United States on July 21, 2025 by VPD
Size: 1 quart
Style: pH Up
best ph. control item I've ever used / bought in my life yo
Reviewed in the United States on July 15, 2025 by Amazon Customer
Size: 1 quart
Style: pH Up
Very easy to use, also very easy to use too much. It could use a better directions information label. Through very quick experience I learned to use it a very little bit at a time.
Reviewed in the United States on December 16, 2024 by Duane Ward
Size: 1 quart
Style: pH Down
Works great for hydroponic garden.
Reviewed in the United States on June 13, 2025 by Weekend Warrior Outdoors
Size: 1 gal
Style: pH Up
General Hydroponics® pH Up has truly revolutionized my hydroponic gardening experience! The meticulously crafted formula, incorporating potassium hydroxide and potassium carbonate, ensures a seamless elevation of pH levels to the ideal range for robust plant growth. I've witnessed a remarkable difference in the vitality of my plants since incorporating this product into my nutrient solutions. Maintaining the proper pH is paramount, and General Hydroponics® pH Up has become my go-to solution for achieving and sustaining the optimal pH range. The buffered nature of the formula provides an added layer of confidence, ensuring a stable pH environment that fosters vigorous plant development. I appreciate the guidance on using pH Up sparingly and incrementally, allowing for precise adjustments without the risk of overshooting the target pH. The step-by-step approach, coupled with regular pH testing using the recommended General Hydroponics® pH Test Indicator, has streamlined the process, giving me confidence in the accuracy of my nutrient solutions. The adaptability of General Hydroponics® pH Up to varying nutrient strengths and water purities adds to its versatility. It's reassuring to know that regardless of my specific setup, this product can cater to the unique needs of my plants, promoting their overall health and maximizing yields. I can confidently attest to the positive impact of General Hydroponics® pH Up on my hydroponic endeavors. My plants exhibit robust growth, vibrant foliage, and a general aura of health. This product has become an indispensable part of my hydroponic toolkit, and I wholeheartedly recommend it to fellow growers seeking reliable pH control and exceptional plant performance. Cheers to General Hydroponics® for delivering a top-notch solution that truly stands out in the world of hydroponic cultivation!
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Reviewed in the United States on January 30, 2024 by Jay Greazy