The Most Common Causes of Algae Growth in Pools (and How to Prevent Them)

Algae growth can turn your pool from a sparkling oasis into a green, murky mess. Understanding what causes algae and how to prevent it is essential for maintaining a clean, safe swimming environment. At Riley & Sons Pool Services, we’re here to help Atlanta and Metro Atlanta homeowners keep their pools algae-free. Here’s what you need to know.

What Causes Algae Growth in Pools?

1. Poor Water Circulation Inadequate water circulation creates stagnant areas where algae can thrive. This often happens when your pool’s pump or filter isn’t functioning properly or if the water level is too low.

2. Imbalanced Water Chemistry Algae love poorly balanced pool water. Low chlorine levels, high pH, or inadequate alkalinity can create the perfect environment for algae blooms.

3. Lack of Regular Cleaning Debris and dirt in your pool act as food for algae. If you’re not regularly skimming, brushing, and vacuuming your pool, algae can take over quickly.

4. Warm Weather and Direct Sunlight Algae thrive in warm water, especially when exposed to sunlight. During Atlanta’s hot summers, it’s essential to maintain proper water chemistry to prevent algae blooms.

5. Contaminants Introduced by Swimmers Lotions, oils, sweat, and even dirt from swimmers can introduce contaminants that feed algae. Showering before swimming can help reduce this risk.

How to Prevent Algae in Your Pool

1. Ensure Proper Water Circulation Run your pool pump for at least 8-12 hours daily to ensure water is consistently circulating. Make sure your skimmers and filters are clean and functioning well.

2. Maintain Balanced Water Chemistry Regularly test your pool water and keep chlorine levels between 1.0 and 3.0 ppm. Adjust pH levels to stay within 7.2 to 7.8, and monitor alkalinity and stabilizer levels.

3. Clean Your Pool Regularly Skim debris daily, brush walls and steps weekly, and vacuum your pool floor to remove algae spores and other contaminants.

4. Use Algecide Preventative Adding a preventative algaecide to your pool can stop algae growth before it starts. Follow the manufacturer’s instructions for best results.

5. Shock Your Pool Periodically Shock your pool after heavy use, storms, or if water chemistry becomes unbalanced. Shocking destroys organic contaminants and prevents algae growth.

6. Schedule Professional Maintenance Even with regular upkeep, a professional pool service can help catch problems early. Riley & Sons Pool Services offers weekly maintenance and algae prevention treatments to keep your pool in pristine condition.