What is an essential factor to monitor in pool water to prevent harmful algae growth?

Monitoring pH levels is crucial to prevent harmful algae growth in pool water. Algae thrive in environments where the pH is outside the recommended range, typically between 7.2 and 7.8. If the pH level is too high or too low, it can create conditions that encourage algae proliferation. High pH levels can lead to cloudy water and decreased effectiveness of chlorine, while low pH levels can cause corrosion of pool surfaces and equipment, as well as discomfort for swimmers.

Keeping the pH balanced is essential as it also impacts other chemical processes in the pool, including sanitation and the effectiveness of other pool treatments, which can further help manage algae growth. Monitoring and adjusting pH regularly as part of standard water care is a fundamental practice for pool operators to maintain a healthy swimming environment.

In contrast, while temperature levels and cleanliness of the pool deck can influence overall pool conditions, they are not direct factors in controlling algae growth. Similarly, maintaining the skimmer basket capacity is important for water circulation and debris removal but does not directly affect the chemical balance needed to combat algae.