Tips to Prevent Algae Growth in Your Outdoor Fountain


Everyone loves a beautiful and clean outdoor water fountain, and how we wish it would stay like that forever. Unfortunately, that is not so, for many external factors affect the appearance of the feature, and the purity of water. One of the most common and probably most disliked problems is algae formation.

Algae covers a large family of different microorganisms that are capable of harvesting light energy from the sun to create carbohydrates. You could see them where there is water: in the pond, in the lakes, in the oceans, or even in your fountains. These blue green colored creatures can endure different ranges of temperatures, acidity, turbidity and carbon dioxide concentrations. This means to say that they could thrive easily over time.


outdoor water fountain


While a part of the natural eco-system, this doesn't mean that you can keep them. In fact, most forms of algae are actually toxic; the rampant growth of these organisms can lead into a large production of toxins, especially on water. When it comes to your fountain, having it filled with a skin of algae buildup will not only threaten the quality of water that passes through the pump, but it will also cause problems in the air which you and your family breathes. This is something you would not want. And thankfully, there are ways on how to keep algae out of your fountain and prevent them from occurring easily.

How to keep water fountain from turning green

First, you must clean your fountain. It should be cleansed at least every couple of months, depending on the size. Regular cleaning and maintenance are essential for fountain algae control and to ensure that your fountain remains functional and aesthetically pleasing. What you want is to keep the water clear and the pump clean from any buildups. Not only does algae create an unsightly appearance over your water feature, but this may also cause some damage in your pump and later on, might even ruin your fountain. Take the basic steps in cleaning your water feature: turn it off, remove the parts, empty the water and clean your fountain inside out. Don't forget to clean the fountain pump as well!

After cleaning you can add special solutions on the water to keep algae from growing. A water clarifying product is used to prevent algae growth. The elements it contains are safe for pets, making it a great product for outdoor water fountains. 

fountec algae cleaner fountains

Fountec is our preferred solution to prevent and eliminate Algae.  You can purchase it here

While these solutions offer ways to cleanse the water and prevent algae from building up too quickly, you can't be 100% that these tiny organisms won't come back. However, you can take things further and make it harder for them to invade your beloved water fountain.

  • Since the algae thrives on sunlight, place your fountain in a shady location. No light to take energy from, no algae growth!
  • Use fresh distilled water for your water feature. Tap water contains debris and minerals which algae may also feed upon. This gives your fountain an extra edge in algae prevention.
  • Always check your fountain and remove the algae buildup once spotted. Place a few drops of cleansers to keep the water clear.


Keeping algae out of your fountain requires a combination of preventive measures, regular cleaning, and proper maintenance. By following the tips outlined in this article, you can enjoy a clean and beautiful fountain all year round.

Stay tuned to this blog to discover how to keep your outdoor fountain in its best shape!

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  • Cristhy Calague