How to Clean Algae from Pool: Expert Tips for a Sparkling Oasis

Algae in swimming pools is not just an aesthetic issue; it’s a battle against a persistent and diverse organism. Understanding algae is the first step in effective removal. These plant-like organisms thrive in aquatic environments. They can be introduced into your pool through various means such as wind, rain, or even contaminated equipment.

Several factors contribute to the growth, including imbalanced water chemistry, insufficient circulation, and pool filtration. Neglecting these elements creates an ideal breeding ground for this organism. Imbalanced pH and chlorine levels particularly provide a conducive environment for algae to flourish. Recognizing this, pool owners must prioritize maintaining optimal water chemistry as a preventive measure against algae infestation.

Types of Pool Algae and Their Identification


Algae come in different types, each requiring a specific approach for removal. The most common type, green plant-like organisms, is known for turning the water into a cloudy green. This variety floats in the water and clings to the pool walls. Mustard plant-like organisms, distinguished by their yellowish-brown color, typically settle in shady areas of the pool. The most challenging type to eradicate is black algae, which forms in thick layers and clings aggressively to surfaces. Identifying the type of plant-like organisms is crucial as it determines the course of treatment. Each type has unique characteristics and responds differently to cleaning agents and methods. If you need help identifying the algae in your pool and want to learn proper ways to get rid of them, check out pool cleaning Sacramento.

Balancing Your Pool’s Water Chemistry

Achieving and maintaining balanced water chemistry is pivotal in the fight against algae. Testing and adjusting your pool’s water is a routine that should never be overlooked. Ideal pH levels range between 7.2 to 7.6, while alkalinity should be maintained between 80 and 120 ppm. Sanitizer levels, especially chlorine, play a significant role in keeping plant-like organisms at bay. Chlorine levels should be consistently monitored and adjusted to ensure they remain effective against growth. Remember, an imbalance in pH and alkalinity can reduce the effectiveness of chlorine, making your pool more susceptible to algae.

The Importance of Thorough Brushing

The physical removal begins with a thorough brushing of the surfaces. This step is essential in loosening algae’s grip on the walls, floor, and steps. A stiff pool brush should be used to scrub all areas vigorously, paying particular attention to corners and crevices where plant-like organisms are prone to accumulate. This process helps to break up the algae, making it easier for pool chemicals to penetrate and destroy them. It’s a labor-intensive step, but its importance cannot be overstated in the plant-like organisms removal process.

Shocking the Pool: A Critical Step in Algae Removal


Shocking the pool, also known as superchlorinating, is a crucial step in eradicating algae. This involves adding a large dose of chlorine to the pool water, which effectively kills plant-like organisms and other pathogens. The process requires following the manufacturer’s guidelines for the amount of shock product relative to your pool’s volume. It’s essential to ensure that the pool pump is running during and after adding the shock to distribute the chlorine evenly throughout the pool. The shock treatment raises the chlorine level temporarily to a point where it can break down the algae and render the pool water clean and clear.

Incorporating Algaecide in Your Cleaning Regimen

Following the shock treatment, the application of an algaecide is a recommended step. Algaecides are chemicals specifically formulated to target and kill these plant-like organisms. They work in conjunction with chlorine to enhance the effectiveness of the cleaning process. It’s important to choose the right type of algaecide based on the algae present in your pool. For instance, some algaecides are more effective against green ones, while others are formulated to tackle mustard or black ones. Applying algaecide according to the manufacturer’s instructions is vital for ensuring its effectiveness.

Optimizing Filtration and Circulation

Proper filtration and circulation play a critical role in preventing algae growth. Your pool’s filtration system should be running efficiently to remove the spores and other debris from the water. Regular cleaning or replacement of filter cartridges is necessary to maintain optimal performance. Additionally, ensuring that the pool’s water is circulating properly helps distribute chemicals evenly and prevents stagnant areas where algae can thrive. It’s advisable to run your pool’s pump for at least 8-12 hours a day to maintain proper circulation.

Regular Pool Maintenance

Regular pool maintenance is essential in preventing outbreaks. This includes routine brushing, vacuuming, and skimming of the pool. Regularly removing leaves, dirt, and debris from the pool prevents the accumulation of organic matter, which can feed these plant-like organisms. Additionally, consistent water testing and chemical adjustments are necessary to keep the pool environment unfriendly to algae.

Post-Treatment Best Practices

After treating your pool for algae, it’s crucial to restore it to its regular chemical balance. This involves retesting the water and adjusting the pH, alkalinity, and chlorine levels to their ideal ranges. Post-treatment care also includes a thorough cleaning of the pool’s filters to remove any trapped spores.

Advanced Algae Prevention Techniques

For those seeking to go the extra mile in prevention, there are advanced techniques to consider. These might include using phosphate removers, which target the nutrients these plant-like organisms need to grow, or investing in UV or ozone pool sanitizing systems that provide an additional layer of protection against algae and other contaminants.


In conclusion, removing algae from your pool requires a multifaceted approach involving physical cleaning, chemical treatment, and ongoing maintenance. By understanding the nature of algae, identifying the type present, and following a thorough cleaning regimen, you can transform your pool back into a sparkling oasis. Remember, prevention is key, and regular maintenance is your best defense against future algae problems.

About Hanna Knowles