pH Down Water Balancer 47

pH Down Water Balancer

Ultimate Pool Closing Kit 39

Ultimate Pool Closing Kit

pH Up Water Balancer 135

pH Up Water Balancer

pH Down Water Balancer

Regular Price $9.99 Special Price $5.99
Use our granular pH Down to lower the pH level of your pool or spa! Maintaining a proper pH level in your pool/spa water is vital for keeping the water clean and safe for use. If your pH level is too high, it can also reduce the effectiveness of the chlorine causing another problem entirely. Many variables affect the pH level in your water. Pool usage, rain, animal droppings, etc all have an effect on your waters pH level. This is why it is important to test a minimum of every 3 - 4 days.
Key Features:
  • 100% sodium Bisulphate
  • Corrects acidic water conditions.
  • Slows the rapid dissipation of chlorine caused by acidic water.
  • Reduces eye irritation by reducing acidity.
  • Reduces corrosion of pool equipment
  • Our pool pH increaser comes in granular form- available in multiple sizes
  • Soluble in cold water
  • Helps maintain the optimal pH level for pool and spa water between 7.2 and 7.6 ppm.
  • Available in 3 sizes to suit your needs! (700 grams, 2.5 KG, 8 KG)


  • Test water to calculate how much pH Down is necessary
  • Mix pH Down with water and add to the pool
  • Adding pH Down will help raise your pH level to land in the desired range. It is best that you add a little bit at a time and then test your pH level accordingly. Do this until you have reached the desired amount.
  1. Add 100 g of AQUA COASTAL pH DOWN for each 10,000 L of pool water when pH rises above 7.8. Test every 2 hours. Repeat dose and procedure until a pH of 7.2 to 7.8 is reached.
  2. Sprinkle on the surface of the water. When, after superchlorination of pool water, the chlorine count is high, dissolve in water first. The degree of acidity or alkalinity of the water is important. A high pH over 7.8, causes scaling and decreases the efficiency of chlorine. A low pH under 7.2, causes corrosion of the metal content in pool water and of metal equipment in contact with pool water (in particular where more than one metal is present) and increases the possibility of irritation to the nose, throat and eyes of bathers. The pH is especially important when pool water is recirculated through a heater. The ideal pH is 7.2 to 7.8. The pH level should always be adjusted before adding chlorine to the pool water. 10,000 L is approximately 2,200 Imp. gal. 1 oz is equivalent to approximately 30 g.
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