Zodiac pH Down

Lower pH in Swimming Pools - Dry Acid


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Dry Acid - Lowers pH and total alkalinity in pool and spas.

Essential for swimmer comfort.

Safer to use than liquid acid.

Active constituent: 1000 gm/kg Sodium Bisulphate

Available in 2 sizes.

3 kg: $18.00
6 kg: $29.00


Dosage Rates:

  • To decrease the Total Alkalinity by 10ppm in 25,000 Litres add 375 grams
  • To decrease the Total Alkalinity by 10ppm in 50,000 Litres add 750 grams
  • pH Down should be pre-dissolved in a bucket of water
  • Rinse scoop and jug after each use.
  • Make sure the pump is on before dosing.
  • Dissolve dosage in a bucket of pool and apply the solution evenly around the edges of the pool. Run your pump for at least 2 hours following treatment.

pH Down should be pre-dissolved in a bucket of water. Always add chemicals to water, NOT water to chemicals.

Dosage rates are a guide only. Please refer to the label for further instructions

Office hours: 9am - 5pm Mon-Fri. 9am - 3pm Sat. & Sun. 

Ph: 1800 648 363 or 02 4956 5694... Tap to Call Us on your Mobile Now!

Email: sales@directpoolsupplies.com.au

Skype: directpoolsupplies

When purchasing, tap the edit cart link to see what freight you pay.



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