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  2. Ultrasonic antifouling - Wikipedia

    en.wikipedia.org/wiki/Ultrasonic_antifouling

    Ultrasonic algae control is a commercial technology that has been claimed to control the blooming of cyanobacteria, algae, and biofouling in lakes, and reservoirs, by using pulsed ultrasound. [ 6 ] [ 7 ] The duration of such treatment is supposed to take up to several months, depending on the water volume and algae species.

  3. 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 ...

  4. Waste stabilization pond - Wikipedia

    en.wikipedia.org/wiki/Waste_stabilization_pond

    In most ponds both bacteria and algae are needed in order to maximize the decomposition of organic matter and the removal of other pollutants. [15] Algae produce oxygen (photosynthesis) and also consume oxygen (respiration), but they leave an excess of oxygen that can then be used by aerobic bacteria for respiration and for the processes of ...

  5. Physidae - Wikipedia

    en.wikipedia.org/wiki/Physidae

    These snails are sometimes viewed as pests in aquarium tanks with fish, because the snails create waste, reproduce very often, and are very hard to remove completely. However, some aquarium owners deliberately choose to add these freshwater pond snails to their tank because the snails will eat uneaten fish food, algae and waste, as well as ...

  6. New Zealand mud snail - Wikipedia

    en.wikipedia.org/wiki/New_Zealand_mud_snail

    The snail tolerates siltation, thrives in disturbed watersheds, and benefits from high nutrient flows allowing for filamentous green algae growth. It occurs amongst macrophytes and prefers littoral zones in lakes or slow streams with silt and organic matter substrates, but tolerates high flow environments where it can burrow into the sediment.

  7. Spanish Civil War ruins offer lesson on cost of conflict - AOL

    www.aol.com/article/news/2016/11/29/spanish...

    Health. Home & Garden

  8. Freshwater snail - Wikipedia

    en.wikipedia.org/wiki/Freshwater_snail

    Some groups of snails that live in freshwater respire using gills, whereas other groups need to reach the surface to breathe air. In addition, some are amphibious and have both gills and a lung (e.g. Ampullariidae). Most feed on algae, but many are detritivores and some are filter feeders.

  9. Building blocks of life found in samples from asteroid Bennu

    www.aol.com/news/building-blocks-life-found...

    Rock and dust samples retrieved by NASA from the asteroid Bennu exhibit some of the chemical building blocks of life, according to research that provides some of the best evidence to date that ...