Size: 250G
Sale price$25.90


Aqua One pH Down Powder

Aqua One pH Down powder allows you to decrease pH to optimal levels. pH is the measure of alkalinity and Acidity within a liquid. pH is measured on a scale from 0 to 14 with 0 - 6.9 is Acid, 7.1 - 14 is Alkaline.

It is critical to test and adjust the pH in your aquarium:

  • For a newly set up aquarium
  • whenever a water change has been performed
  • As part of your weekly maintenance


  • Reduces alkalinity and increases acidity
  • Powder is instantly soluble in aquarium water
  • Suitable for tropical and coldwater


  • Use a pH test kit to test pH levels of your aquarium. Where the pH reading is too high, use Aqua One pH Down to lower pH
  • Use the 2g per 40L of aquarium water to lower pH by 0.4 per 24 hour period
  • Use the 2g spoon provided, measure the desired amount of pH down into a clean container
  • Place some aquarium water from your aquarium into the container and stir to mix the solution
  • Once Dissolved, add the mixture to your aquarium slowly over a 15 minute period
  • Pour the mixture near the outlet of your filtration system
  • Re-test the pH after 12-24 hours and make adjustments as necessary

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