Problems and Solutions to pH Control

February 27, 2020

Fibre Tech pH Control

pH, which is the measure of acidity or alkalinity of the water, is determined by your test kit. A proper pH reading is 7.2-7.6.

Ideally, your pool should be maintained at the lower level of 7.2.

Problem Solution
After testing the water, if the pH is too high (above 7.6):
  • Chlorine efficiency is reduced
  • Scaling of surfaces and equipment may occur
  • Water may become cloudy
  • Filter efficiency is reduced
To correct this condition, use a pH decreaser: liquid muriatic acid and granular sodium bisulfate.

This must be pre-dissolved in a bucket of water before being added to the pool

If the pH is too low (below 7.2):
  • Chlorine dissipates more rapidly
  • Water may be irritating to swimmers
  • Corrosion of equipment and surfaces may occur
To correct this condition, a pH increaser is added directly to the water. Sodium Bicarbonate (Baking Soda) is less expensive and easier to use than soda ash.

NOTE: If your pH is low, test the alkalinity before adjusting the water’s pH.

If the alkalinity is low, adjust this first and then retest pH the following day.

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