Water Balance in Your Swimming Pool

Water Balance in Your Swimming Pool

A sparkling, crystal-clear swimming pool is the epitome of relaxation and enjoyment, inviting swimmers to immerse themselves in refreshing waters. However, behind the scenes of this aquatic oasis lies a delicate equilibrium known as water balancing.

Achieving Optimal Water Balance in Your Swimming Pool

Properly balanced pool water is not only visually appealing but also essential for swimmers’ health and the longevity of pool equipment. In this comprehensive guide, we delve into the intricacies of water balancing in swimming pools, ensuring your aquatic retreat remains a source of joy and rejuvenation.

Understanding Water Balance

Pool Water Balancing

Water balance in a swimming pool refers to the harmonious interplay of various chemical factors that influence the water’s quality. These factors include pH, total alkalinity (TA), calcium hardness, and sanitiser levels. Maintaining optimal levels of these parameters is crucial for preventing issues such as algae growth, scaling, corrosion, and eye or skin irritation among swimmers.

pH Level

The pH level of pool water measures its acidity or alkalinity on a scale of 0 to 14, with 7 being neutral. Ideally, pool water should have a pH level between 7.2 and 7.6. This slightly alkaline range provides optimal comfort for swimmers and ensures the efficacy of chlorine or other sanitisers in killing harmful bacteria and algae.

Total Alkalinity (TA)

Total alkalinity acts as a buffer for pH, helping to stabilize fluctuations and prevent rapid pH changes. The recommended TA level for swimming pools is typically between 80 and 120 parts per million (ppm). Adequate TA levels ensure that pH adjustments remain effective and prevent corrosive or scale-forming conditions.

In other words, the alkalinity of water is capable of water to neutralising acid to the desired pH. It is mainly a sum of carbonate, bicarbonate, and hydroxide ions. Salts of weak acids like borate, silicate, and phosphate may also contribute to alkalinity. 

Calcium Hardness

Calcium hardness refers to the concentration of dissolved calcium in the water. Maintaining proper calcium hardness levels helps prevent corrosion of pool surfaces and equipment. The ideal range for calcium hardness in swimming pools is generally between 200 and 400 ppm, although specific recommendations may vary depending on factors such as pool surface materials and local water conditions.

Sanitizer Levels

Sanitisers such as chlorine or bromine are essential for disinfecting pool water and keeping it safe for swimming. Maintaining appropriate sanitiser levels is crucial for preventing the growth of bacteria, viruses, and algae. The recommended sanitiser levels typically fall within a specific range, often measured in parts per million (ppm), depending on the type of sanitiser used and the pool’s size and usage.

The Role of Tony’s Pools & Bioponds

From pH balancers to calcium hardness adjusters, Tony’s Pools offers a comprehensive range of products designed to help pool owners achieve and maintain optimal water balance. Our team of experts provides invaluable guidance and support, ensuring that every pool owner can enjoy a safe, clean, and inviting swimming environment.

Best Practices for Water Balancing

Pool Parameter

Achieving and maintaining optimal water balance in your swimming pool requires diligence and attention to detail. Here are some best practices to help you keep your pool water in perfect harmony:

1.   Regular Testing: Test your pool water regularly using a reliable test kit or strips. This allows you to monitor pH, TA, calcium hardness, and sanitiser levels and make necessary adjustments promptly.

2.   Adjust pH First: If your pool water requires multiple adjustments, always start with pH. Balancing pH first ensures that subsequent adjustments to TA and calcium hardness are more effective.

3.   Add Chemicals Slowly: When adding chemicals to your pool, do so slowly and in small increments to prevent overcorrection. Allow time for the chemicals to distribute evenly throughout the water before retesting.

4.   Monitor Calcium Hardness: Regularly check the calcium hardness level, especially if you live in an area with hard water. Calcium levels can gradually increase, leading to scaling and other issues if left unchecked.

5.   Maintain Proper Filtration: Adequate filtration is essential for keeping pool water clean and balanced. Ensure your filter is clean and functioning correctly, and run it for the recommended duration each day.

6.   Seek Professional Advice: If you are unsure about how to balance your pool water or encounter persistent issues, do not hesitate to seek guidance from pool professionals or the experts at Tony’s Pools. They can offer tailored advice and solutions to address your specific needs.


In the realm of swimming pool maintenance, achieving optimal water balance is paramount for ensuring a safe, enjoyable, and long-lasting swimming experience.

By understanding the factors that contribute to water balance and implementing best practices for testing and adjustment, you can keep your pool water clear, clean, and inviting year-round. 

With the support of Tony’s Pools, maintaining your pool’s water balance becomes a seamless and rewarding endeavour, allowing you to focus on what matters most—making lasting memories with family and friends in your aquatic retreat.

Tony Augustine

About the author

In 2012, I helped establish KJA & Sons and have been deeply engaged in many swimming pool initiatives ever since. My expertise lies in designing filters for chlorine-free swimming pools, as well as living water gardens, koi fish ponds etc.