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How to Lower pH in a Pool

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Test the pH
Test the PH
  • Test your water's pH and total alkalinity using a pool water testing kit
  • The pH level should be between 7.2 and 7.6. 
  • The total alkalinity should be between 80 ppm and 150 ppm. 
  • If the levels are too high, you will need to lower your water's pH.
Treat the Water

Safety: Always wear protective clothing, including goggles or safety glasses and rubber gloves, when using pool pH-reducing products to re-balance the water.

If using a dry acid: 

  • Follow the dosage directions and spread the product in the deepest part of your pool while the pump and filter are running. 
  • Using a pool brush will help ensure the product is evenly dispersed and will help break up any undissolved clumps. 
  • In some instances, pre-dissolving may be required to avoid surface discoloration. Follow the label instructions accordingly. 

If using muriatic acid

  • Follow the dosage directions and slowly pour the product into your pool. Make sure to avoid spills and splashes. 
  • Always apply pH balancing chemicals with the pump and filter running, unless otherwise stated. 
  • In some cases, you may need to mix and dilute the product. Follow the label instructions accordingly.
Wait and Re-Test
Wait and Re-Test
  • After applying the product, let the pool water to circulate for at least two hours. 
  • Test the pH again and add more product if needed. 
  • Once the water is properly balanced, you may resume regular use.