testing poo;l water
April 19th, 2024
Author: Sam Bonner

Pool Algae: Types, Prevention, and Essential Pool Maintenance Services

A crystal-clear swimming pool is the epitome of relaxation and enjoyment during the scorching summer months. However, the presence of algae can turn your serene oasis into a murky nightmare. Understanding what algae in your pool is, how it forms, and the necessary prevention and maintenance measures can ensure your pool remains pristine all season long.

What is Algae?

Algae are simple, plant-like organisms that thrive in aquatic environments. They can range in size from microscopic single-celled organisms to larger, more complex structures visible to the naked eye. In swimming pools, algae typically manifest as green, brown, or blackish discolourations on pool surfaces or as suspended particles in the water.

The Common Causes of Algae in Swimming Pool Water

Want to find out how algae forms in a pool? Here are the common causes:

  1. Poor Water Circulation – Inadequate filtration and circulation allow algae spores to settle and reproduce in stagnant water.
  2. Unbalanced Water Chemistry – Imbalanced pH, alkalinity, or sanitiser levels create favourable conditions for algae growth.
  3. Insufficient Sanitisation – Low chlorine levels fail to effectively kill algae spores, leading to unchecked growth.
  4. Organic Contaminants – Leaves, debris, and organic matter provide nutrients for algae in your pool, fueling their rapid reproduction.


Now that you know how algae forms in a pool, preventing algae growth requires a proactive approach to pool maintenance:

  • Maintain Proper Water Chemistry – Regularly test and adjust pH, alkalinity, and sanitiser levels using high-quality pool water testing kits from JC Leisure to ensure optimal water balance.
  • Effective Filtration – Clean or backwash filters as recommended to maintain efficient water circulation and remove debris.
  • Routine Cleaning – Skim the pool surface, vacuum debris from the bottom, and brush walls and tile lines to prevent algae buildup.
  • Shock Treatments – Periodically shock the pool with a chlorine-based shock treatment to eliminate algae spores and maintain sanitiser levels.
  • Use Algaecides – Utilise algae prevention products from JC Leisure to inhibit algae growth and keep your pool water crystal clear.

How to Test for Algae in Your Pool

Testing for algae presence is crucial for early detection and prompt treatment. Look for signs of algae growth such as greenish or cloudy water, slimy surfaces, or visible algae patches.

Regularly test your pool water for chlorine, pH, and algae presence using reliable pool water testing kits from JC Leisure to identify any imbalances or signs of algae growth.

How Algae is Removed from Pools

The best way to get rid of pool algae depends on how much algae there is. Start by thoroughly brushing pool surfaces to dislodge algae, followed by vacuuming to remove dead algae and debris from the water. Next, administer a shock treatment using a high dose of chlorine to kill algae spores and restore sanitiser levels to optimal conditions.

To combat stubborn algae and prevent future growth, apply a potent algaecide from JC Leisure, specially formulated to eliminate algae effectively. Ensure efficient filtration and algae removal by maintaining or replacing filter media through our filter media maintenance service, available at JC Leisure.

Book a Pool Maintenance Service with JC Leisure

Maintaining a sparkling clean pool can be time-consuming and challenging, but JC Leisure offers professional pool maintenance services to make it hassle-free. Our pool algae removal service is handled by expert technicians who will eliminate algae infestations, restoring your pool to its pristine condition.

We also provide specialised swimming pool balance tank cleaning products to keep your balance tank clean and fully functional, ensuring optimal performance. Explore our range of high-quality pool maintenance products designed to keep your pool water balanced and clear.

For extended filter lifespan and optimal filtration performance, consider our filter media maintenance service, which helps prolong the effectiveness of your pool filters. Trust JC Leisure to perform our excellent pool algae removal service, allowing you to enjoy a consistently clean and inviting swimming pool without the stress of maintenance tasks. Shop with us today.


How do I get rid of algae in my pool fast?

To learn how to get rid of algae in your pool, follow our advice here:

Start by shocking the pool with a high dose of chlorine to kill existing algae and spores. Follow up with thorough brushing and vacuuming to remove dead algae and debris. It’s also recommended to use an effective algaecide to prevent algae from regrowing.

By following these quick steps, you’ll know how to get rid of algae in your pool quickly.

Is it OK to swim in a pool with algae?

Swimming in a pool with algae is not advisable due to potential health risks. Algae can cause skin irritation, eye infections, and respiratory problems. It’s best to wait until the pool water is clear and algae-free before swimming.

Does chlorine kill algae?

Yes, chlorine is effective at killing algae when maintained at the proper levels. However, severe algae infestations may require shock treatments with higher chlorine concentrations to eradicate the problem completely.

Why is my pool suddenly algae?

Algae can suddenly appear due to various factors such as insufficient sanitiser levels, poor water circulation, or the presence of organic contaminants. It’s essential to regularly test and maintain water chemistry to prevent algae outbreaks.

Should you brush algae out of a pool?

Yes, brushing algae-infested pool surfaces is crucial for dislodging algae and exposing them to treatment chemicals. Brushing also helps prevent algae from clinging to pool walls and surfaces, aiding in their removal.

Can too much chlorine cause algae?

No, excessive chlorine levels typically inhibit algae growth rather than promote it. However, maintaining chlorine within the recommended range is important to ensure effective sanitisation without causing irritation to swimmers.

Can you swim in a slightly green pool?

Swimming in a pool with a greenish tint is not recommended as it indicates the presence of algae. Algae-contaminated water can cause skin irritation, eye discomfort, and other health issues.

What are the side effects of swimming in algae?

Swimming in algae-infested water can lead to skin irritation, allergies, and respiratory problems, especially for individuals with sensitive skin or allergies. It’s essential to treat the pool promptly to maintain a safe and enjoyable swimming environment.

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