How Can I Correct High PH Levels in Fish Pond?

The pH of a liquid is a measure of the hydrogen and hydronium ions present in solution. It is measured on a logarithmic scale from 0 to 14. A pH of 0 is the most acidic and a pH of 14 is the most basic. Fish require water that has a pH of approximately 6.5 to 7.5. Though pH levels are generally stable, fish produce ammonia, which increases the pH of water. Over time, this must be counterbalanced to ensure that the pH remains in the correct range.

Things You'll Need

• pH strips
• Measuring cup
• Vinegar

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Instructions

1. • 1

     Dip a pH strip into the water. Take the pH reading based on the number or color chart provided with your strip.

   • 2

     Add vinegar to the water if the pH is too high. Use ¼-cup of vinegar for every 500 gallons of water.

   • 3

     Wait at least 12 hours and check the pH again using another pH strip.

   • 4

     Repeat steps 2 thru 4 until the test strips read a pH of 6.5 to 9.5.