What is the ideal total alkalinity range for my spa?

The total alkalinity should be in the range of 90 - 150 ppm (parts per million). A spa or hot tub with low total alkalinity would require constant adjustment of the pH.

  • To raise total alkalinity, add sodium bicarbonate in small quantities.

  • To lower the total alkalinity, add acid (Dry Acid – Sodium Bisulphate) in small quantities.

  • BioLab Aquality 750gm

    • Helps slowly lower PH and decrease total alkalinity
    • Helps improve chlorine efficiency
    • Prevents corrosion
    • Easily prevent scale build-up and eye irritation
    • Test in one hour.
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