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General Hydroponics

General Hydroponics HGC722120 Liquid Premium Buffering for pH Stability, Quart, Orange

  • Based on 10,913 reviews
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Availability: In Stock.
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Arrives Tuesday, Sep 1
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Size: 1 quart


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.

Brand Name: General Hydroponics


UPC: 793094015325


Global Trade Identification Number: 00793094015325


Package Size Name: Quart


Number of Items: 1


Unit Count: 32 Fluid Ounces


Model Number: HGC722120


Manufacturer Part Number: HGC722120


Manufacturer: Hawthorne Hydroponics, LLC


Item Type Name: Premium Buffering For pH Stability


Included Components: 1


Best Sellers Rank: #1,794 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #1 in Hydroponic pH Control


ASIN: B00CJID1I4


Customer Reviews: 4.8 4.8 out of 5 stars (10,913) 4.8 out of 5 stars


Item Form: Liquid


Product Benefits: Lowers pH


Item Weight: 2.6 Pounds


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 1

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.

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Similar Products

Top Amazon Reviews

    • Hydroponics must have!
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. ... show more
Reviewed in the United States on April 2, 2024 by Sean Callahan
    • Great buy
Size: 1 quart Style: pH Down
Works as expected!
Reviewed in the United States on June 18, 2026 by Briana Ball
    • Good product
Size: 1 quart Style: pH Down
PH down does what it says very effective easy to use
Reviewed in the United States on May 31, 2026 by Ricky Ricardo Servant Jr
    • Does what it should
Size: 1 quart Style: pH Down
Not much to say about this. It does what it should and it's a good price imo. I use it every feeding because my tap water runs at like 8ph. Recommend getting a decent ph pen though to dial it in
Reviewed in the United States on February 27, 2026 by Megan
    • Does what it is marketed to
Size: 1 quart Style: pH Down
It's pH down to use with hydroponics / growing so nothing crazy to write about. Use as needed whenever your water is above the ideal range. I bought mine in 2021 and have had some inconsistent results with it recently where a small amount brought the pH down more than it usually would. That's happened three times now so I took some time to shake it and hopefully that resolves the inconsistencies. If I can't figure that out then I'll replace it since I don't like not being able to estimate how much to use for a certain pH and volume of water. MSDS sheet from 2021 I found indicates its 10-17% phosphoric acid. Therefore I put value for money pretty low since you can buy food grade phosphoric acid at 85% for pretty affordable prices and dilute it yourself. If your churning through this stuff and want a more affordable option I would suggest you look into that. ... show more
Reviewed in the United States on May 10, 2024 by Amazon Customer
    • Arrived no leaks 🙏 Arrived no leaks 🙏
Size: 1 gal Style: pH Down
Review Image by Raffy Donado
Works great arrived on time no leaking
Reviewed in the United States on June 3, 2026 Reviewed in the United States on June 3, 2026 by Raffy Donado
    • Works well
Size: 1 quart Style: pH Down
Works well. The secondary seal is extremely difficult to remove, I had to cut it with a knife. The tab just peeled off without the seal. Otherwise great product.
Reviewed in the United States on May 10, 2026 by Jiggles
    • Does exactly what I want it to do
Size: 1 quart Style: pH Down
This PH Down works even better than the aquarium brand I bought; it takes a lot less product to lower the PH of my plant water in my 6 cup watering can. I go from a PH of 7 or 8 down to 6.5 on 1ml or less. I bought a 4oz glass bottle that comes with a 1ml dropper to help me control the drops.
Reviewed in the United States on March 3, 2026 by SciNerd

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