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  2. 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.

  3. Freshwater aquarium algae - Wikipedia

    en.wikipedia.org/wiki/Freshwater_aquarium_algae

    Various examples of aquatic hitchhiking algae that may be found in freshwater aquaria. There are many types of algae that are commonly found in a freshwater aquarium setting. Species may be unintentionally disseminated through spores and fragments that hitchhike on ornamental fish and plants purchased from aquarium suppliers. [1]

  4. Aquarium filter - Wikipedia

    en.wikipedia.org/wiki/Aquarium_filter

    Algae scrubber (upflow version) floating on a reef pond. Algae may be grown purposely, which removes chemicals from the water which need to be removed in order to have healthy fish, invertebrates and corals. This is a natural ("green") filtering method, which lets an aquarium operate the way oceans and lakes operate. [18]

  5. Siamese algae-eater - Wikipedia

    en.wikipedia.org/wiki/Siamese_algae-eater

    Siamese algae-eater in the aquarium. The Siamese algae-eater (Crossocheilus oblongus) is a species of freshwater fish in the carp family, Cyprinidae. This bottom-dwelling tropical fish is found in mainland Southeast Asia, including the Chao Phraya and Mekong basins as well as the Malay Peninsula. Its natural habitats are streams and rivers as ...

  6. Algae eater - Wikipedia

    en.wikipedia.org/wiki/Algae_eater

    American-flag fish, Jordanella floridae, are also dependable algae-eating fish. They are one of the only fish to graze on black brush algae, as with the siamese algae eater, and will also indiscriminately graze on other algae such as diatoms and hair algae. However, like all pupfish, they can be nippy to fish smaller or slower than them. Males ...

  7. Water purification - Wikipedia

    en.wikipedia.org/wiki/Water_purification

    In 1904, Allen Hazen showed that the efficiency of a sedimentation process was a function of the particle settling velocity, the flow through the tank and the surface area of tank. Sedimentation tanks are typically designed within a range of overflow rates of 0.5 to 1.0 gallons per minute per square foot (or 1250 to 2500 litres per square meter ...

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