Alkalinity in a hot tub

March 18, 2023

Alkalinity in a hot tub refers to the measure of its ability to resist changes in pH levels. Essentially, it is a measure of the concentration of bicarbonate, carbonate, and hydroxide ions in the water, which can affect the water’s acidity or basicity.

Maintaining proper alkalinity in a hot tub is important because it helps to keep the pH levels stable, which can help prevent skin irritation, corrosion of the hot tub equipment, and other issues.

The ideal range for alkalinity in a hot tub is typically between 80 and 120 parts per million (ppm). If the alkalinity is too low, the pH levels in the water may become unstable and fluctuate rapidly. On the other hand, if the alkalinity is too high, the water may become cloudy, scale may form on the hot tub equipment, and it may be more difficult to maintain the proper pH levels.

To control the alkalinity in a hot tub, you can use a water testing kit to measure the alkalinity levels and then add the appropriate chemicals to adjust them as needed. Common chemicals used to adjust alkalinity include sodium bicarbonate, sodium carbonate, and sodium hydroxide. It’s important to follow the manufacturer’s instructions and safety precautions when using these chemicals and to regularly test the water to ensure that the alkalinity levels remain within the recommended range.

Peterborough Landscape Supply offers free water analysis for your hot tub.  Bring us in a water sample and we will gladly test your water for you.


Posted In: Hot Tubs
« »