A Guide to Algae Prevention and Treatment in Your Pool
Dealing with the emergence of algae in your pool can be a complex challenge, given the various types of algae and contributing environmental factors. Whether it’s the early signs of mustard algae or a full-blown green or black algae infestation, understanding the keys to clear, clean, and healthy water is essential. Here are actionable steps to address and prevent algae-related issues in your pool.
Step 1: Assess Water Quality
Identify any breakdown in the three crucial elements for clear water: circulation, filtration, and chemical balance. Ensure proper pump operation, clean filters, and balanced water chemistry, including appropriate Free and Available Chlorine (FAC), pH levels, Total Alkalinity (T.A.), and Conditioner/CYA content.
Step 2: Brushing Techniques
For effective removal of algae, use a wall brush suitable for your pool surface. Avoid steel wire brushes on fiberglass, painted, or vinyl-lined pools to prevent damage. Brushing exposes algae to chemicals and helps disrupt its growth.
Step 3: Chemical Treatment
Tailor chemical doses based on algae type and severity. Adjust pH levels with Muriatic Acid, increase chlorine concentration, and utilize PhosFree agents to enhance chlorine efficacy. Apply algaecide before thorough cleaning and brushing.
Step 4: Post-Treatment Maintenance
After algae clearance, backwash and clean the filter, run the pump for 8 to 12 hours daily, and replenish necessary chemicals. Regularly test for phosphates, addressing them if needed, to prevent rapid algae recurrence.

Step 5: Preventive Measures
To curb algae growth, maintain proper water circulation, filtration, and chemical balance. Keep in mind that dead algae can contribute to phosphates, encouraging future growth. Rinse brushes thoroughly with liquid chlorine, especially when dealing with black algae.
Step 6: Shock Treatment
Occasionally, perform a shock treatment by adding a high dose of chlorine to the pool. This helps eliminate any lingering algae spores and enhances overall water sanitation.
Step 7: Regular Pool Inspection
Conduct routine inspections of your pool equipment, such as pumps, filters, and skimmers, to identify any issues promptly. Addressing equipment malfunctions can prevent conditions favorable for algae growth.
Step 8: Sunlight Management
Limit prolonged exposure of your pool to direct sunlight, especially during peak hours. Consider using pool covers when the pool is not in use to minimize sunlight exposure, which can inhibit algae growth.
Key Points to Remember:
- Different algae types and environmental factors contribute to varying severity levels.
- Swiftly address breakdowns in water clarity keys as soon as algae appears.
- Use appropriate brushing techniques based on pool surface to effectively combat algae.
- Adjust chemical treatments according to algae type and severity.
- Follow a thorough post-treatment maintenance routine to prevent algae resurgence.
- Regularly test for phosphates and address them to hinder future algae growth.
- Exercise caution with black algae to prevent its spread between pools.
- Implement shock treatments and regular pool inspections for comprehensive algae prevention.
- Manage sunlight exposure to inhibit algae growth.
Conclusion:
Successfully managing and preventing algae in your pool requires a comprehensive approach. By understanding your pool’s specific needs and promptly addressing any issues, you can maintain clear, clean, and healthy water. If you need professional assistance, consider reaching out to Dolphin Pool Services, serving Virginia, Maryland, and the District of Columbia. Contact us for reliable pool-related solutions!