Interested in learning more about what it takes to keep your pool or hot tub in great shape? This article describes the chemistry involved in keeping your pool or hot tub safe and your water crystal clear. It will help you better understand what the tests you are taking mean, and what happens when your pool chemistry is no longer in the recommended ranges.
The degree to which chlorine is effective in sanitizing your pool by breaking down contaminants is highly correlated to the degree to which pH is kept in balance. In this article, we dive into the relationship between chlorine and pH, and how pH of water changes the effectiveness of chlorine.
The ideal pH level in both swimming pools and hot tubs is 7.4 to 7.6. This is the level where water is most comfortable for swimmers while also maximizing chlorine’s sanitizing ability.
You should test your pool pH level as often as you test free chlorine – about twice per week. To raise pH use borax or soda ash (aka washing soda). To lower pH use muriatic acid.
Maintaining both pH and total alkalinity in your swimming pool is important for keeping your pool properly sanitized and non-corrosive. Total alkalinity is to pH what cyanuric acid is to free chlorine. Total alkalinity stabilizes pH levels. The ideal pool pH level is 7.4 to 7.6. The ideal total alkalinity level is 80 to 120 ppm.