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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

    An electrically operated water pump is the prime motivator in recirculating the water from the pool. Water is forced through a filter and then returned to the pool. Using a water pump by itself is often not sufficient to completely sanitize a pool. Commercial and public pool pumps usually run 24 hours a day for the entire operating season of ...

  4. Copper pesticide - Wikipedia

    en.wikipedia.org/wiki/Copper_pesticide

    They can kill bacteria, oomycetes and algae, and prevent fungal spores from germinating. Common forms of fixed copper fungicides include copper sulfate , copper sulfate pentahydrate , copper hydroxide , copper oxychloride sulfate , cuprous oxide , and copper octanoate .

  5. Water aeration - Wikipedia

    en.wikipedia.org/wiki/Water_aeration

    A fountain consists of a means of spraying the water upwards into the air. Typically this may be done using a motor that powers a rotating impeller. The impeller pumps water from the first few feet of the water and expels it into the air. [4] This process utilizes air-water contact to transfer oxygen.

  6. Algae scrubber - Wikipedia

    en.wikipedia.org/wiki/Algae_scrubber

    An algae scrubber is a water filtering device which uses light to grow algae; in this process, undesirable chemicals are removed from the water. [1] Algae scrubbers allow hobbyists to operate their saltwater or freshwater tanks or ponds using natural filtration based on primary production , much as occurs in oceans and lakes.

  7. Microcystin - Wikipedia

    en.wikipedia.org/wiki/Microcystin

    The microcystin-producing Microcystis is a genus of freshwater cyanobacteria and thrives in warm water conditions, especially in stagnant waters. [7] The EPA predicted in 2013 that climate change and changing environmental conditions may lead to harmful algae growth and may negatively impact human health. [20]

  8. Pink algae - Wikipedia

    en.wikipedia.org/wiki/Pink_algae

    Pink algae is a growth of pink, slimey bacterial matter which can sometimes occur in pools and laboratory equipment. The name is a misnomer, because pink algae is not a true algae but is actually caused by a bacterium in the genus Methylobacterium. The color of the bacterial growth comes from pigments within its cells.

  9. Ultraviolet germicidal irradiation - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet_germicidal...

    Aquarium and pond sterilizers are typically small, with fittings for tubing that allows the water to flow through the sterilizer on its way from a separate external filter or water pump. Within the sterilizer, water flows as close as possible to the ultraviolet light source. Water pre-filtration is critical as water turbidity lowers UV-C ...

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