What should be the main focus when combating algae in pools?

The main focus when combating algae in pools is regular maintenance and sanitation. Algae thrive in conditions where there is inadequate sanitation and maintenance, leading to imbalances in the pool's chemistry. This includes maintaining proper levels of chlorine or other sanitizing agents, ensuring appropriate pH levels, and keeping the water clean and clear.

Regular maintenance involves routine cleaning, brushing pool surfaces, and monitoring water quality. By proactively managing these factors, the growth of algae can be prevented or controlled more effectively. This approach not only helps in combating current algae growth but also plays a crucial role in maintaining overall pool health, ensuring the water remains safe and enjoyable for use.

In contrast, increasing temperature can inadvertently encourage algae growth, as warmer water can provide an ideal environment for algae. Reducing pool size does not address the underlying maintenance and sanitation issues, while decreasing filtration time may lead to inadequate circulation, allowing debris and algae to proliferate instead of being removed. Thus, focusing on regular maintenance and sanitation is the most effective strategy for keeping pools algae-free.