
Having a clean, crystal-clear pool is one of the greatest joys of summer, but algae growth can turn this oasis into an annoying problem. Algae not only changes the color of the water, giving it a green or brown hue, but it also creates a slippery, unattractive surface.
Although they are not dangerous on their own, their presence encourages the growth of bacteria that can be harmful to health. Luckily, keeping your pool free of algae is possible with a little preventative maintenance and the right tools.
Why do algae appear in the pool?
Algae appear in the pool for various reasons: the accumulation of leaves, soil or rain debris can carry spores into the water, where they find the ideal environment to multiply.
Furthermore, if you do not take care of the pH and chlorine levels, the water becomes the perfect setting for the proliferation of these annoying microscopic plants. Heat and sun further accelerate this process, meaning that in areas with hot climates, the risk is greater.
Fortunately, preventing their appearance and eliminating them effectively is not as complicated as it seems. Next, we will explain how to do it step by step.
How to prevent algae in the pool

Preventing the appearance of algae is always better than having to eliminate them once they have colonized your pool. By following a few simple recommendations, you can keep them at bay and enjoy clean water all year round.
Steps to follow to prevent algae in the pool
- Maintain regular pool cleaning
Cleaning the bottom and walls of the pool is essential to prevent the buildup of debris. Use an automatic pool cleaner if possible, but if you don’t have one, a manual brush will also work well. Make sure you do this at least once a week to remove any algae or spores that may be present.
- Check and clean filtration systems
The filter is a key piece to keep the water moving and clean. If the filter is dirty or not working properly, algae will find a place to settle. Clean the filter periodically, especially if you notice an increase in pressure, which indicates that it may be clogged.
- Control pH and chlorine levels
Maintaining the pH of the water between 7.2 and 7.6 is essential. If the pH is outside this range, chlorine loses effectiveness, which facilitates algae growth. Check the pH level regularly and adjust as necessary to ensure the chlorine is working properly.
- Constant filtration
Make sure that the filtration system works at least 8 hours a day so that the water is in continuous movement. Stagnant water is algae’s best friend, so a good filtration system is one of the most effective measures to prevent its appearance.
- Use of preventive anti-algae products
There are specific products to prevent the appearance of algae, known as algaecides. Using them periodically, especially in times of intense heat, can help you keep the water free of these unwanted organisms.
Why it is better to prevent algae than to clean it

Preventing algae is always easier and less expensive than removing it once it has taken over your pool. Additionally, algae not only affects the appearance of the pool, but can also damage the filtration system and increase the need to use more chemicals to recover the water. By preventing algae from appearing in the first place, you save time, money and effort.
Algae, when allowed to proliferate, generate a slimy film that can be dangerous for bathers, making the pool floor slippery. This environment can attract bacteria and other harmful organisms that are harmful to health, so preventing them is not only a matter of aesthetics, but also of safety.
How to remove algae in the pool
If algae has already appeared in your pool, a shock treatment is necessary. Here we explain how to eliminate algae, once present:
- Brush affected surfaces
Before applying any treatment, brush the walls and bottom of the pool well to remove any adhered algae. This will make it easier for the products you apply to act more effectively.
- Adjust pH and chlorine levels
Make sure the pH is within the recommended range (7.2-7.6). If the pH is off, chlorine will not be as effective at killing algae.
- Chlorine shock treatment
Apply a shock treatment with a higher dose of chlorine than usual to kill the algae. Follow the manufacturer’s instructions to calculate the correct amount of product based on the volume of water in your pool.
- Continuous filtration and filter cleaning
After shock treatment, keep the filtration system running for at least 24 hours. If you notice the pressure in the filter increasing, perform a backwash to remove trapped algae.
- Repeat if necessary
If there are still traces of algae after treatment, you may have to repeat the process until they are completely removed.
How to prevent and eliminate algae from your pool with Pure Pool Technology

If you are looking for a more ecological and effective solution, Pure Pool Technology is the ideal answer. This innovative system uses nanocrystals and UV technology to remove algae sustainably and without harmful chemicals. Unlike traditional treatments that require large amounts of chlorine, Pure Pool Technology prevents algae from forming thanks to the combination of nanocrystals that break down these organisms and hydroxyl radicals that keep the water clean.
Additionally, Pure Pool Technology not only eliminates algae, but also prevents bacteria buildup, ensuring your pool water remains crystal clear and free of contaminants. This system is especially effective in luxury pools, where maintaining clean, high-quality water is paramount.
Conclusion: why it is important to clean the walls and bottom of the pool properly
Keeping your pool clean and free of algae is essential to enjoy a safe and pleasant environment. Preventing the appearance of algae will not only save you time and effort, but will also ensure that the water is free of bacteria and other organisms that can compromise the health of bathers.
Plus, with eco-friendly solutions like Pure Pool Technology, you can keep your pool in perfect condition without having to resort to harsh chemicals. Contact GodoPools for more information on how we can help you keep your pool impeccable thanks to pool home automation.