How do I prevent algae in my pool?

Keep your chlorine level steady, run the pump at least 8 hours a day, and brush the walls once a week. Algae needs sunlight, nutrients, and stagnant water to grow, so chlorine kills it, the pump prevents settling, and brushing removes spores. Test strips every few days catch imbalances early. Consistency is key — skipping a week or running the pump only 4 hours invites algae.