I’ve got algae in my pool!

I’ve got algae in my pool! Nothing spoils poolside fun in the sun like the presence of algae in your swimming pool. Slipping and sliding is for water slides only and sure doesn’t feel good when it’s because of aquatic organisms photosynthesising and taking over your pool. Algae spores find whatever means possible to get into your pool, via the wind and rain, or even through swimwear and tiny spots of slime on inflatable pool toys. If your pool circulation is poor and your water chemistry is imbalanced, you’re putting out the welcome mat for the worst kind of pool party: an algae infestation. People often ask, “Can pool algae hurt you?” The good news is that algae is not harmful in itself, but if left for too long, the bacteria feeding on algae could cause health issues for swimmers. Regardless, it’s just plain yucky and so it’s best to kill algae right away.

If you have algae in your pool, it’s important to take prompt action to eliminate it and prevent further growth. Algae can make the pool water cloudy and unappealing, and if left untreated, it can lead to more significant issues. Here’s a step-by-step guide on how to deal with algae in your pool:

1. Identify the Type of Algae:

Green Algae: This is the most common type and often forms a greenish tint in the water or on pool surfaces.
Yellow/Mustard Algae: Appears yellow or brown and can be more stubborn to eliminate.
Black Algae: Characterized by dark black or blue-green spots on pool surfaces.

2. Brush the Pool Surfaces:

Use a pool brush to vigorously scrub the pool walls, floor, and steps. This helps to break up the algae and make it easier to treat.

3. Adjust pH and Alkalinity:

Test and adjust the pH and alkalinity levels to the recommended ranges. Proper water balance enhances the effectiveness of algaecides and sanitizers.

4. Shock the Pool:

Use a pool shock treatment to raise the chlorine levels significantly. Follow the product instructions for the correct dosage based on your pool size.
Choose a shock treatment that specifically targets algae.

5. Use Algaecide:

Select and apply an algaecide appropriate for the type of algae present. Follow the manufacturer’s instructions for dosage and application.
Copper-based algaecides are effective against most types of algae.

6. Run the Pool Pump:

Keep the pool pump running continuously during the treatment process. This helps distribute chemicals evenly and ensures thorough filtration.

7. Backwash the Filter:

Backwash the pool filter after the shock treatment to remove dead algae and other debris. Clean or replace the filter media if necessary.

8. Retest and Adjust Chemical Levels:

Retest the water chemistry after a day or two and adjust the pH, chlorine, and other levels as needed to maintain balance.

9. Continue Brushing and Vacuuming:

Brush the pool surfaces daily to remove any remaining algae and prevent its return.
Use a pool vacuum to remove debris and dead algae from the pool.

10. Maintain Proper Water Chemistry:

Regularly test and maintain proper water chemistry to prevent the recurrence of algae. Consistent sanitation and filtration are key.

11. Identify and Address Underlying Issues:

Determine the cause of the algae growth. Common factors include poor circulation, inadequate sanitation, or imbalanced water chemistry.
Address any underlying issues to prevent future algae problems.

12. Consider Pool Cover:

If your pool is frequently exposed to sunlight and you’re dealing with persistent algae issues, consider using a pool cover when the pool is not in use to limit sunlight exposure.

If algae problems persist or if you’re dealing with a severe infestation, consider seeking advice from a pool professional. They can provide specific guidance based on the type of algae and the characteristics of your pool. Regular maintenance, proper water circulation, and prompt action are key to preventing and treating algae in your pool.