Imagine dipping your toes into the refreshing water only to find unwelcome green invaders lurking beneath the surface. Yes, we’re talking about pool algae – those bothersome microorganisms that always seem to spoil your summer oasis.
Have you ever found yourself curious about the various types of pool algae that can invade your beloved swimming pool? As a pool owner, you undoubtedly want a clear and inviting swimming pool. However, pesky algae can take over and turn your dream pool into a green nightmare.
Algae, as a group of diverse single-celled organisms, encompass over 20,000 species that can flourish in aquatic environments, including swimming pools. While some species of algae are harmless, others can manifest as green, black, yellow, or even pinkish growths on pool surfaces. Without prompt intervention, algae can rapidly spread, resulting in slippery pool bottoms, cloudy water and an overall unpleasant swimming experience for pool-goers.
Throughout this article, we’ll assist you in identifying common types of algae appearance, growth and ways to prevent algae ranging from the notorious green algae that can turn your pool water into a murky swamp to the slimy black algae that stubbornly cling to pool or spa surfaces.
Understanding the Different Types of Pool Algae
Green Algae (Chlorophyta)
Green algae, belonging to the phylum Chlorophyta, are among the most common types of algae found in swimming pools. Despite there being around 4,300 known species of green algae, only a few of them tend to invade pool environments. These algae have a remarkable ability to turn clear pool water into a murky, green mess, quickly becoming a nuisance for pool owners. These algae can grow in the presence of sunlight and feed off nutrients in the water, such as leaves, debris and even sweat from swimmers.
Green algae can exist in two primary forms in swimming pools:
- Free-floating green algae: This form of algae appears cloudy or hazy, giving a greenish tint, making it difficult to see the bottom of the pool. Swimmers might complain of itchiness or skin irritation.
- Wall-clinging green algae: These algae attach themselves to walls of the pool, steps and other surfaces, forming green or slimy patches and making the surfaces slippery.
One of the main reasons for green algae growth is an inadequate level of chlorine in the pool water. To further confirm the presence of algae in your pool, brush the suspected area gently. If it becomes greener or cloudier, then it’s likely present.
Mustard Algae (Synura)
Mustard algae, also known as yellow algae, presents itself as a fine, yellowish-green powdery substance. It is particularly resistant to chlorine, making it more challenging to eliminate. If you encounter yellow or mustard algae, you’ll notice that it has a slimy and slippery texture, resembling oil or mustard paste, that distinguishes it from other forms of pool debris. They have a distinct odour and can appear like pollen, making it easy to mistake them for dirt or sand. These algae can survive in harsh conditions and can even resist standard pool treatment chemicals.
Unlike green algae, mustard algae tend to attach to pool surfaces, especially in corners, crevices and other hard-to-reach areas with low water circulation or little sunlight. They can also cling to pool toys and equipment left in the water for long periods. To detect mustard algae, perform a chlorine test by adding drops of chlorine to a water sample and comparing its colour to a chart. If the water turns a yellow or brownish colour, it is likely that mustard algae are present in the pool.
Black or Blue-green Algae (Cyanobacteria)
Black or blue-green algae are the most persistent and unsightly among various types of swimming pool algae. They pose unique challenges for pool owners due to their ability to thrive in areas with poor circulation and limited exposure to sunlight. These algae manifest as dark black or blue-green spots on pool surfaces, typically with a hard and protective outer layer, which makes them highly resilient to normal pool chemicals. These algae tend to root themselves into pool surfaces, demanding persistent efforts for eradication.
Unlike other types of algae, they have a distinctive texture that feels gritty and rough, like sandpaper, due to their dense and protective outer layer. The rough texture also provides a favourable environment for debris and other substances to stick to the pool, making them even harder to remove.
Pink Algae (Raphidophyceae)
Pink algae, also known as red algae, are another type that can infest swimming pools. Despite the name, they can vary in colour from pink to reddish-brown or even violet. They are distinguishable by their slimy to grainy or powdery texture, making them feel unpleasant to the touch. These algae are commonly found in both marine and freshwater environments, and they tend to thrive in pools with low chlorine levels and inadequate sanitation.
Additionally, pink algae can take on filamentous, sheet-like, or branched forms. These algae thrive in sunny areas of the pool and can form slimy patches on pool surfaces. They are especially common in warmer climates and can spread rapidly if not treated promptly. To test for it, put a sample in water with a small amount of bleach. If it turns lighter or white quickly, it’s likely pink algae.
Algae Treatment Method
To effectively eradicate algae from your pool, a systematic and thorough treatment method is essential. By following these steps, you can restore your pool and prevent algae growth for a refreshing swimming experience once again.
- Use a Pool Brush and thoroughly scrub your pool, including walls, floors and steps. This physical action helps dislodge and expose the algae, making it easier to treat with chemicals. Black algae can be particularly stubborn due to their protective layer. For effective treatment, use a stiff pool brush or stainless-steel algae brush to break through this protective layer before applying the algaecide. This allows the chemicals to penetrate and target the underlying algae.
- Perform a Pool Shock Treatment by adding a high dose of chlorine or a non-chlorine shock product to the pool water to break down the algae’s cellular structure. Follow the manufacturer’s instructions for the appropriate dose of pool shock based on the pool size.
- Select an Appropriate Pool Algaecide to prevent algae based on the type of algae present in the pool. For green pool algae, a general-purpose algaecide is suitable. Mustard or yellow algae may require a specific algaecide designed to target it. Black algae often require a copper-based algaecide, as it is more resistant. Pink algae may be effectively treated with an algaecide designed to combat it. Follow the manufacturer’s instructions for dosage and application.
- Maintain the Chlorine Level in the pool for several days after applying the shock treatment and algaecide. This sustained high chlorine concentration ensures that any remaining algae are effectively eliminated.
- Keep the Pool’s Filtration System Running continuously for at least 24 hours to distribute the treated water throughout the pool, reaching all areas and aiding in the filtration process and removing dead algae particles.
- Backwash or Clear Your Pool Filter to remove captured algae debris from your pool and prevent clogging. This step helps maintain proper filtration efficiency and allows the filter to trap and remove any remaining algae effectively.
- Retest the Pool Water Chemistry after a period of 24 hours using a reliable test kit. Especially adjust the chlorine level as necessary to maintain appropriate sanitizer levels for a clean and balanced pool environment.
- Repeat the Treatment Process until the pool is clear, as algae in pools can persist or reappear after treatment. Monitor the pool closely and take prompt action if any signs of algae growth reemerge.
Conclusion
Becoming a savvy pool owner starts with understanding the different types of algae and how to combat them effectively. By investing in the right products and consistently cleaning and maintaining your pool, you can effectively get rid of any type of pool algae and enjoy a hassle-free swimming experience.
However, in cases of severe infestations, persistent growth, or uncertainty in algae identification, seeking professional assistance from pool professionals like Jam Pool Removals is a wise decision. Our team offers valuable advice and provides access to high-quality products and equipment to ensure that your pool remains a refreshing oasis for your enjoyment.
With our assistance, you can confidently maintain a beautiful and inviting swimming pool. So, take charge of your pool maintenance, enjoy a refreshing swim and show off your pool management skills. Contact us now to make a splash and begin your journey toward a better-managed pool!
