Algae comes in many species and subspecies, and just like its variety, there are multiple causes for its growth. One of the most common culprits is improper chlorination. During summer, even a single day without chlorine can lead to a significant algae bloom. Poor circulation and filtration also contribute—without proper water movement, chlorine can’t distribute effectively, and without efficient filtration, algae spores linger in the water, ready to multiply when exposed to sunlight.

 

Chlorine: 
    Chlorination is key to keeping algae at bay, but it’s not just about adding chlorine—it’s about maintaining the right chemical balance.

 

pH Levels:
    The effectiveness of chlorine depends on your pool’s pH. The lower the pH, the stronger the chlorine.

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Cyanuric Acid (Conditioner/Stabilizer):
    This acts like sunscreen for chlorine, protecting it from breaking down too quickly in sunlight. Without it, chlorine will "gas off" within hours, leaving your pool vulnerable to algae growth. However, too much cyanuric acid reduces chlorine’s efficiency, which can also encourage algae growth.

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Proper Filtration and Circulation:
    Filtration and circulation are relatively easy to manage, but they play a crucial role in preventing algae. Clean your filter regularly to ensure it’s functioning properly.
Adjust return eyelets to circulate water throughout the pool and avoid stagnant areas.
Run your pump long enough to achieve at least 1.5 turnovers per day (one turnover = the entire volume of your pool passing through the filter).

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Algaecides:
    When algae appears, many pool owners instinctively think, “JUST ADD ALGAECIDE!” However, this isn’t always the best solution. While algaecides can help, they often come with drawbacks.

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• Copper-Based Algaecides:    These are common and effective but can take up to two weeks to fully eliminate algae. If copper levels aren’t monitored, they can build up to dangerous levels, leading to heavy metal poisoning—not the “quick fix” you want for your swimmers!

• Sodium Bromide-Based Algaecides:    These consume a lot of chlorine, and once introduced, they convert your pool into a bromine pool—permanently—until it’s drained and refilled. This makes them a poor long-term choice.

• Silver-Based Algaecides:    Like copper, these require careful monitoring to avoid metal buildup.

• Polyquat Algaecides:    Unlike traditional algaecides, polyquat is an algaestat, meaning it prevents algae growth rather than eliminating existing blooms. It should be used for prevention, not treatment.

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Algae’s Food Sources: 
    Phosphates, Nitrates, and Sulfates
Algae thrives when it has access to nutrients like phosphates, nitrates, and sulfates, which can enter your pool through dirt, leaves, pet hair, urine, and other organic materials. Nitrates and Sulfates cannot be removed chemically and require draining and refilling the pool.
Phosphates, however, can be removed with a lanthanum-based product. While more expensive, this treatment is highly effective and works quickly when phosphates are the primary cause of algae growth.

Need Help?
    If you’re dealing with algae or any other pool-related issue in the Temecula Valley, our team is here to help! click below to get expert assistance and keep your pool in perfect condition.