Algae in an Outside Fountain

Algae

• Algae are a marine plant related to seaweed and were probably the basis for all plants on earth. There are various forms of algae, both single and multicelled. Algae will naturally grow in water, both in rivers, ponds and fountains and in certain circumstances are eaten by fish and other water-dwelling animals.

In Fountains

• Although algae can grow in all water sources, fountains are particularly susceptible. This is because of the conditions in which algae thrive. Algae prefers water with low levels of oxygen and high degrees of direct sunlight. For example, a fountain in a town square in which the water is not flowing as it does in a river, but is also exposed to the sunlight all day long, is ideal for algae.

Removal

• If there is substantial algae growth in a fountain, cleaning it up can be a lengthy task. Start by removing all the algae from the surface using a pond skimmer and drain the fountain of its water. Wipe clean all surfaces of the fountain affected by the algae and use vinegar and a toothbrush on the more stubborn areas. Remove filters and clean them thoroughly and rinse the fountain with clean water before refilling. If there is just a covering on the surface, remove it with a pond skimmer and work on algae prevention.

Prevention

• Place the fountain in an area in which it will not get as much direct sunlight and regularly change the water, ensuring the filters are clean and that water is running through it unobstructed. Use an algaecide in the fountain's water. This works in a similar way to chlorine in a public swimming pool. Alternatively add a cup of vinegar to the water on a regular basis.