What causes algae in a swimming pool ?
The facts of nature that support algae growth include sunlight, high outside temperatures, and humidity. All the nutrients algae need to grow are commonly present in swimming pool water: carbon, hydrogen, oxygen, nitrogen and phosphorous. Many contaminants contain nitrogen and phosphorous-like contaminants such as skin fragments, dead bacteria, cosmetics, suntan lotions, chemical cleaners, soils, fertilizers, bird droppings, dead insects etc. The good news is that in most cases algae is not harmful to swimmers. It does pose a slip hazard if any is present on wet deck areas or on pool steps. It also clouds the water making it difficult to see a potential drowning victim. Algae is most commonly grouped by color into three groups; green, black and yellow. Algae can be controlled to some degree by insisting that swimmers use the bathrooma as well as shower before entering the pool. Other factors that may help include the removal of plants that drop debris into the pool as well as making su
