Growth Technology pH Down is a concentrated phosphoric acid (81%) that can be used to reduce the pH of almost any liquid it is added to.
 
When growing plants in hydroponics or aeroponics, it is necessary to keep the pH of your nutrient solution within a certain range.
 
Different plant species have different requirements, but in general, most plants like a pH range of 5.5 – 6.5. pH Down is added sparingly to nutrient solution to help keep the acidity within this range.
 
Key Features
 
Reduces the pH of nutrient solution
Highly concentrated - 81% Phosphoric Acid
Phosphoric Acid - one of the best and most stable pH down adjusters
Corrosive - requires careful handling