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  2. Aquarium filter - Wikipedia

    en.wikipedia.org/wiki/Aquarium_filter

    Sponges, plastic balls, ceramic tubes and gravel are all suitable for aquarium filtration. Numerous materials are suitable as aquarium filtration media. These include synthetic wools, known in the aquarium hobby as filter wool, made of polyethylene terephthalate or nylon.

  3. Aquascaping - Wikipedia

    en.wikipedia.org/wiki/Aquascaping

    This approach, sometimes called the "Walstad Method" and popularized by Diana Walstad, can include the use of soil in place of aquarium gravel, the elimination of CO 2 apparatus and most filtration, and limited lighting. Only a few fish or shrimp are kept to limit the quantity of fish waste.

  4. Aquarium - Wikipedia

    en.wikipedia.org/wiki/Aquarium

    Typical weekly maintenance includes changing around 10–30% or more of the water while cleaning the gravel, or other substrate if the aquarium has one; however some manage to avoid this entirely by keeping it somewhat self-sufficient.

  5. Freshwater aquarium - Wikipedia

    en.wikipedia.org/wiki/Freshwater_aquarium

    For a tropical fish tank, maintaining a warm environmental temperature ranging between 75 and 86 °F (24 to 30 °C) enables different tropical fish to thrive at different temperatures. [2] Aquarium substrate usually consists of sand or gravel.

  6. Aquaponics - Wikipedia

    en.wikipedia.org/wiki/Aquaponics

    A commercial aquaponics system. An electric pump moves nutrient-rich water from the fish tank through a solids filter to remove particles the plants above cannot absorb. The water then provides nutrients for the plants and is cleansed before returning to the fish tank below.

  7. Recirculating aquaculture system - Wikipedia

    en.wikipedia.org/wiki/Recirculating_aquaculture...

    Recirculating aquaculture systems ( RAS) are used in home aquaria and for fish production where water exchange is limited and the use of biofiltration is required to reduce ammonia toxicity. [1] Other types of filtration and environmental control are often also necessary to maintain clean water and provide a suitable habitat for fish. [2]