5 Ways to Prevent Pool Algae During a Heatwave

Run your pump 10–12 hours a day Hot sun burns off chlorine fast, and algae loves warm, still water. Run the pump during the hottest part of the day to keep water moving and filter out spores.

Keep chlorine at the high end of normal Test chlorine daily during a heatwave because it drops quickly. Bumping it up gives you a buffer against algae growth.

Shock the pool at the start of the heatwave A quick shock treatment buys you several days of protection. Don’t wait until you see green.

Brush walls and floor weekly Algae starts as an invisible film on surfaces. Disturb it before it settles and becomes a problem.

Maintain pH between 7.2 and 7.6 High pH makes chlorine ineffective. Keep it in range so your sanitizer actually works.