Brown algae in swimming pool water can be an absolute nightmare for pool owners. It not only makes the pool look dirty and uninviting but can also pose potential health risks if not treated properly. Fortunately, with the right approach and chemicals, you can effectively eliminate brown algae and keep your pool crystal clear.

Key Takeaways

• Brown algae are resilient and require aggressive treatment.
• Liquid chlorine is highly effective for shocking.
• Hydrochloric acid for pool maintenance helps maintain the ideal pH.
• Chlorine tablets keep chlorine levels consistent.
• Regular brushing and vacuuming are crucial.
• Backwash the filter after shocking it to clear dead algae.
• Balance your water chemistry to prevent recurrence.
• Circulate water continuously after shock treatment.
• Clean all pool equipment and accessories to avoid contamination.
• Monitor your pool water regularly for early signs of algae.

What is Brown Algae in the Swimming Pool?

Brown algae, also known as mustard algae, can appear as slimy, brownish spots on the walls and floor of your pool. It’s commonly found in shady areas or places with poor water circulation. Unlike green algae, brown algae are more resistant to standard chlorine treatments and often require a more aggressive approach to remove.

Why Does Brown Algae Appear in Your Pool?

Brown algae typically emerge when the pool’s chemical balance is off or when pool maintenance has been neglected. Factors like improper pH levels, inadequate filtration, and debris build-up can encourage its growth.

Also Read: Pool Cleaning Acid Wash

How to Remove Brown Algae from Your Pool?

Step 1: Brush and Vacuum the Algae

Begin by scrubbing the affected areas with a stiff pool brush. Use a vacuum to remove any loosened algae from the floor and walls. This step helps break down the algae’s protective layer, making chemical treatment more effective.

Step 2: Shock Your Pool with Liquid Chlorine

After brushing, it’s essential to shock your pool to kill off the algae. Use liquid chlorine 20 litres to superchlorinate the water, as this concentrated dose will break down the algae and sanitise the pool effectively.

Step 3: Adjust pH and Add Hydrochloric Acid

To enhance the effectiveness of chlorine, test and adjust your pool’s pH level. Ideally, it should be between 7.2 and 7.6. Adding hydrochloric acid for pool maintenance helps lower high pH levels, allowing chlorine to work efficiently.

Step 4: Use Chlorine Tablets for Ongoing Maintenance

Chlorine tablets are an excellent way to maintain chlorine levels consistently after shock treatment. Place them in your pool skimmer or floating dispenser to ensure slow, continuous chlorine release, keeping algae at bay.

Step 5: Run the Pump and Filter Continuously

To circulate chemicals properly and prevent algae regrowth, run your pump and filter continuously for at least 24 hours.

Also Read: How to Clean Swimming Pool Salt Chlorinator Cells?

Step 6: Backwash the Filter

Backwashing helps remove dead algae and other contaminants trapped in your pool filter. Make sure to clean the filter thoroughly to maximise efficiency.

Step 7: Test and Balance Pool Water

After shocking and backwashing, test the water to ensure all levels are balanced. Maintaining proper alkalinity and pH will help keep brown algae in swimming pool water from returning.

Preventive Measures to Keep Algae Away

• Regularly brush and vacuum your pool
• Maintain balanced pH and chlorine levels
• Use algaecides periodically
• Run your pump and filter regularly
• Clean pool accessories and toys to avoid contamination

Also Read: How to Clean a Green Pool?

FAQs

Can you swim with brown algae?

Swimming with brown algae in the pool is not recommended as it can cause skin irritation and may harbor harmful bacteria. Always treat the algae before swimming.

How do I get my pool from brown to clear?

Shocking the pool with liquid chlorine, brushing, vacuuming, and maintaining proper pH levels are crucial steps to get your pool clear.

What chemical is good for brown algae in pools?

Liquid chlorine and hydrochloric acid are highly effective in killing and preventing brown algae in swimming pools.

Does algae turn brown when it dies?

Yes, when algae die, they can turn brown or grey and usually settle at the bottom of the pool. Regular vacuuming helps remove it.

How do I get rid of brown algae in my swimming pool?

Brush the affected areas, shock the pool with liquid chlorine, adjust pH with hydrochloric acid, and maintain levels using chlorine tablets.

Conclusion

Brown algae in your swimming pool can be a persistent and unsightly problem, but with consistent care and the right treatment methods, you can reclaim your pool’s clarity and beauty. By following the steps outlined in this guide, including proper chemical usage and maintenance routines, you’ll keep brownish algae in pool water from making a comeback. Stay proactive with regular cleaning and monitoring, and your pool will remain inviting and algae-free throughout the swimming season.