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AquaDown pH Lowering Solution 8oz-1gal

Specially Formulated Blend of Phosphoric Acid safe for use in aquaponic and hydroponic systems. Comes in 8oz, 32oz or 1 gallon bottles.

This means we have in stock and can ship the same business day if ordered before 3 pm EST. We use Fedex & UPS
Material: Liquid
Manufacturer: The Aquaponics Source
  • Feeds your plants phosphorus as you lower pH
  • To maximize plant growth, the pH of your aquaponic fish tank water should be 6.8 - 7.0.
  • 18% Phosphoric Acid
  • Safe for fish and plants
  • Storage: Store in a cool, dark place
In stock
As low as $8.95 Regular Price $11.00

Product Description

AquaDown pH Lowering Solution feeds your plants phosphorus as you lower pH. To maximize plant growth, the pH of your aquaponic fish tank water should be 6.8 – 7.0. pH can reach unacceptably high levels when high pH water is added, pH unstable media, such as rock wool and granite gravel products, are used,or an anaerobic zone develops in your grow bed.
Use to lower pH in an aquaponics system when it is 7.6 or higher to bring it down to 7.0. Rapid changes in pH can be harmful to fish so use sparingly and adjust over several hours or days. Add to system a little at a time, wait for it to distribute throughout the system, then retest pH. Repeat, until the desired pH is reached. The quantity necessary to adjust pH will vary depending on the nature of the grow media and the carbonate level of the water in the system. To find out how much to use in your system we recommend a technique called titration. Take 1 gallon of water from your tank, figure out how much AquaDown you need to decrease the pH to the target level, and then multiply that by the number of gallons in your system.

Typical Applications

Aquaponics applications


  • 18% Phosphoric Acid
  • Feeds your plants phosphorus as you lower pH
  • Safe for fish and plants
  •  Store in a cool, dark place


Phosphoric Acid causes burns. Handle with care. Avoid contact with skin and eyes. In case of contact wash from skin or eyes with plenty of water for several minutes. Keep locked up and out of reach of children. If swallowed, call your physician or Poison Control Center. Proper use, storage and disposal is the responsibility of the user.

More Information
Featured No
New Arrivals Yes
Compatible with The Aquaponics Source
Shipping Label Quick Shipment
Brand The Aquaponics Source
Made In USA Yes
Material Liquid
Freight (not shippable) No
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