Green algae are the most diverse group of algae, with more than 7000 species growing in a variety of habitats. Its a paraphyletic group because it excludes the Plantae, which is plants, mosses, ferns, and flowering plants. Like plants, green algae contains two forms of chlorophyll, which they use to capture light energy to fuel the manufacture of sugars, but unlike plants they are primarily aquatic.
Green Algae, resembles its name by being green in color and slimy on the walls and floors of pools. They usually form right at sunrise on the shaded part of the pool in the areas that I call the dead spots. These are areas where circulation is poor and hard to get to with the average brush. It is dangerous if it is in fiberglass or vinyl pools, due to being really slick and the chance of slipping and falling is very likely. Usually by brushing and by super chlorination, the algae will die. This form of algae can take over a pool overnight if left untreated. This is the fight against Mother Nature.
I believe that working on problems in a pool is like being a veterinarian. The patient cannot tell you what is wrong, so all you can do is to treat the symptoms aggressively. Time on the job will help you with these problems.
On new pools where the surface is still curing (it can take up to 18 months to cure), for the first year prevention is a priority . In some cases, shocking a pool can force metals in the water to cling to the walls and cause staining. Older cured pools can withstand much more abuse than a new surface, so keep that in mind.
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