4 Things to Know About Preventing Pool Algae

Keep chlorine above 1 ppm Algae needs sunlight, nutrients, and stagnant water to grow. Chlorine kills it, so test your levels every few days and never let chlorine drop below 1 ppm for more than a day.

Run the pump at least 8 hours a day Moving water prevents algae from settling. A pump that runs only 4 hours a day is not enough to stop growth.

Brush the walls once a week Brushing scrapes off spores before they can take hold. Skipping even one week gives algae a chance to start.

Consistency matters more than shock treatments Shocking the pool once a month won’t replace daily habits. A steady routine of chlorine, pump time, and brushing is all you need — no magic potion required.