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2. Algaecide - Wikipedia

   en.wikipedia.org/wiki/Algaecide

   Barley straw, in England, is placed in mesh bags and floated in fish ponds or water gardens to help reduce algal growth without harming pond plants and animals. Barley straw has not been approved by the United States Environmental Protection Agency (EPA) for use as a pesticide and its effectiveness as an algaecide in ponds has produced mixed results during university testing in the United ...

3. Swimming pool sanitation - Wikipedia

   en.wikipedia.org/wiki/Swimming_pool_sanitation

   Swimming pool contaminants are introduced from environmental sources and swimmers. Affecting primarily outdoor swimming pools, environmental contaminants include windblown dirt and debris, incoming water from unsanitary sources, rain containing microscopic algae spores and droppings from birds possibly harboring disease-causing pathogens. [4]

4. Pool skimmer - Wikipedia

   en.wikipedia.org/wiki/Pool_skimmer

   A skimmer or surface separator [1] (it separates substances from the surface of a liquid) [2] [3] is an essential accessory for the maintenance and cleaning of the water in a swimming pool. It is used to remove all the surface dirt floating on the water surface, such as leaves , tanning oil and human secretions.

5. Water chlorination - Wikipedia

   en.wikipedia.org/wiki/Water_chlorination

   Shock chlorination is a process used in many swimming pools, water wells, springs, and other water sources to reduce the bacterial and algal residue in the water. Shock chlorination is performed by mixing a large amount of hypochlorite into the water.

6. Algae bloom ruined the Lake Welch swimming season. Here ... - AOL

   www.aol.com/news/algae-bloom-ruined-lake-welch...

   Algae can sicken people and pets. The bloom, which affects the entire 216-acre lake, happened "literally overnight," a parks official said. Algae can sicken people and pets.

7. Shade ball - Wikipedia

   en.wikipedia.org/wiki/Shade_ball

   Shade balls in a European hotel swimming-pool. A shade ball is a small plastic sphere floated on top of a reservoir for environmental reasons, including to slow evaporation and prevent sunlight from causing reactions among chemical compounds present in the water.