Algae can appear in any type of pool, including pebble pools.
This guide discusses the types of algae that commonly appear in pools, explains some of the causes of algal growth, and provides practical tips and techniques for preventing and removing algae. Pool owners can avoid algae problems by maintaining proper pool chemistry and a regular cleaning schedule. With correct care, you and your guests can enjoy swimming in crystal clear water throughout the season.
Table of Contents
3 Types of Algae Commonly Found in Pools
It’s important to understand that there will always be some algae spores in your pool. It’s unavoidable. The key is preventing those spores from reproducing and taking over. Here are three types of algae to look out for.
Green Algae
Green algae are the most common type found in pools. They float in the water and create a green tint or attach to pool surfaces and make them slippery. Green algae thrive in pools with low chlorine levels and poor circulation.
Yellow Algae (Mustard Algae)
Yellow algae, also known as mustard algae, are less common but more challenging to eliminate. They appear as yellow or mustard-colored spots on pool walls and floors, often in shady areas. While yellow algae are easy to brush off, they’re chlorine resistant and can only be killed with specific treatments.
Black Algae
Black algae are the most difficult to remove because they are highly chlorine resistant. They appear as small black dots on pool surfaces. Black algae have deep roots that can penetrate porous surfaces, making them tough to eradicate.
If your old pool is stained by algae and ready for a refresh, check out PebbleTec’s pool remodel guide.
Causes of Green Algae in PebbleTec Pools
How does the most common type of pool algae take hold? Knowing the conditions that enable green algae to flourish can help you understand the reasoning behind pool care recommendations.
Imbalance in Pool Chemistry
An imbalance in pool chemistry, particularly low chlorine levels, is the primary cause of green algae in pools. Chlorine is essential for killing algae spores and keeping your pool water clean. Regularly testing and adjusting your pool’s chemical levels is crucial.
Inadequate Filtration and Circulation
Proper filtration and circulation are essential for preventing algae growth. Inadequate filtration allows algae spores to settle and grow, while poor circulation can create stagnant areas where algae thrive.
Read more about the importance of water circulation in pools.
Poor Maintenance Habits
Neglecting regular pool maintenance can lead to algae problems. Skipping routine cleaning, brushing and vacuuming allows algae to take hold and multiply. See below for tips to help you develop a consistent maintenance schedule.
Environmental Factors
Environmental factors, such as nearby trees, can contribute to algae growth. Leaves, pollen and other organic matter can introduce algae spores into your pool. Additionally, warm and sunny weather creates ideal conditions for algae to flourish.
How to Clean Green Algae from a PebbleTec Pool
If you notice that algae are growing in your pool, don’t wait to take action! Follow these steps to clean your pool and get the algae under control.
Step-by-Step Cleaning Process
- Balance the Pool’s pH and Chlorine Levels: Test and adjust your pool chemicals to ensure they are within the recommended ranges.
- Brush the Pool Surface: Use a brush suitable for pebble surfaces to scrub the pool walls and floor, focusing on areas with visible algae. (We recommend using Nylon, combo (50/50 Nylon and stainless steel) and polypropylene brushes for PebbleTec Original, PebbleSheen, PebbleBrilliance and PebbleEssence. Nylon brushes are only recommended for PebbleFina and PebbleBreeze.)
- Shock Treatment: Apply a shock treatment to the pool to kill the algae. Follow the manufacturer’s instructions for the correct dosage.
- Run the Filter Continuously: Keeping the pool filter running during the treatment process removes dead algae and prevents them from settling. Make sure to check that your filter is clean and in good working order.
- Vacuum the Pool: After the shock treatment, vacuum the pool to remove any remaining algae and debris. Learn how to vacuum your pool.
Methods to Remove Algae Stains from a Pebble Pool
Once you’ve taken steps to kill the algae in your pool, restore your pool’s appearance by removing stains. Look for algae-specific cleaners and chemicals to clean discolored areas. Use a brush designed for pebble pool surfaces to remove algae from crevices and cracks.
Preventative Measures to Keep Algae at Bay
The best approach to algae maintenance is prevention! These weekly and monthly maintenance steps will help keep your pool algae free.
Regular Maintenance Schedule
Weekly Tasks
- Skimming: Remove leaves, debris and other organic matter from the pool surface.
- Brushing: Brush the pool walls and floor to prevent algae from taking hold.
- Vacuuming: Vacuum the pool to remove debris and prevent algae growth.
Monthly Tasks
- Deep Cleaning: Perform a thorough cleaning of the pool, including scrubbing and vacuuming.
- Checking Chemical Levels: Test and adjust the pool’s chemical levels to maintain proper balance.
Seasonal Considerations and Adjustments
Adjust your pool maintenance routine based on the season. During the spring and summer, when algae grow faster, increase the frequency of cleaning and chemical checks.
Check out PebbleTec’s maintenance checklist.
Ensuring Proper Water Circulation
Your pool’s pump and filter system must function correctly to maintain proper water circulation. Regularly check and clean the filter to ensure it is operating efficiently.
Use of Algaecides and Other Preventative Chemicals
Algaecides and other preventative chemicals provide another layer of protection from algal growth. Follow the manufacturer’s instructions for proper application and dosage.
Learn about the best pool algaecide for your pool.
What to Do if Algae Keep Returning Despite Treatment
If you continue struggling with algae despite taking the proper measures to control it, there may be an underlying issue, such as a problem with your pool’s filtration system or a persistent imbalance in pool chemistry. Consult an experienced pool professional who works with pebble pools to help you diagnose and address the issue.
Maintaining an algae-free pool is essential for enjoying your backyard oasis. Establishing a cleaning and chemical maintenance routine is the best and easiest way to keep algae in check. By following the advice in this article, you can keep your PebbleTec pool pristine and inviting throughout the spring and summer seasons. Remember that all our beautiful finishes can last for decades with proper maintenance – the effort you put into caring for your pool is well worth it.
Below are some frequently asked questions about algae and algae maintenance. For more tips and advice, check out common pebble pool questions and answers at the bottom of our customer support page.
Is this something that PTI authorized builders/installers usually can help with? I’d like to link to that page if so, and mention how PTI only works with specially trained applicators.
By staying proactive with algae maintenance, you can ensure your PebbleTec pool remains a beautiful, fun place to spend time. Remember that our excellent customer support team is always ready to answer your questions and help guide you in maintaining your pool.
FAQs
The first signs of algae in a pool typically include cloudy water, green, yellow or black spots on the pool surfaces, and slippery pool walls or floor. Early detection and treatment are key to preventing a full-blown algae infestation. Regularly inspecting your pool can help you catch these signs early and take action to keep your pool algae-free.
For more information on maintaining your PebbleTec pool, view our maintenance tips.
Many pool owners who live in locations with cold winters expect low temperature to kill pool algae. While algal growth slows or stops when temperatures dip below 40°F, algae can remain dormant over the winter and bloom again when warm weather returns.
For more information on maintaining your PebbleTec pool, view our maintenance tips.
Regularly testing and adjusting your pool’s pH levels is one of the best ways to control algae. The ideal pH level for killing algae is slightly acidic, around 7.2 to 7.6. This pH range ensures that chlorine, the primary chemical used to kill algae, remains effective.
Check out this guide to pool cleaners for products that can help you maintain your pool.
Algae can stain any pool if left untreated for an extended period. It’s essential to address algae growth promptly to prevent stains growing on pool surfaces and keep your pebble pool looking its best.
Many of our customers had pools with standard finishes that needed resurfacing and took the opportunity to remodel with PebbleTec. Learn more.
