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  2. Substrate (aquarium) - Wikipedia

    en.wikipedia.org/wiki/Substrate_(aquarium)

    For freshwater aquaria, gravel is the most common substrate. To prevent damage to fish, gravel should not be sharp. Aquarium gravel can be as coarse as pea-sized or as fine as 1–2 mm. [1] It is available in a number of colors, and may be naturally colored or dyed, and may have a polymer seal to ensure it does not affect water chemistry. [1]

  3. Aquarium filter - Wikipedia

    en.wikipedia.org/wiki/Aquarium_filter

    Some filter materials, such as plastic "bioballs", are best used for biological filtration. With the notable exception of diatom filters, aquarium filters are rarely purely mechanical in action, as bacteria will colonise most filter materials effecting some degree of biological filtration. [1]

  4. Freshwater aquarium - Wikipedia

    en.wikipedia.org/wiki/Freshwater_aquarium

    Other equipment includes a canopy or hood as an aquarium cover, an aquarium stand or base, lighting accessories, a heater, a thermometer, air pumps, filtration apparatus, airstones, fish food, a fish net, water conditioner, water quality testing kits, a siphon hose or gravel cleaner, and a bucket for water changes. When first starting an ...

  5. Algae scrubber - Wikipedia

    en.wikipedia.org/wiki/Algae_scrubber

    An algae scrubber allows algae to grow, but the algae grow inside the filter instead of in the aquarium or pond. This removes excess nutrients (scrubs the water), diminishing nuisance algae in the aquarium or pond . Nuisance algae in the aquarium or pond are not to be confused with the desired algae in the algae scrubber filter itself.

  6. Sand filter - Wikipedia

    en.wikipedia.org/wiki/Sand_filter

    A very common arrangement for these filers is composed of: anthracite on top, sand and garnet, with a support of gravel at the bottom. The depth of these filters is normally between 0.6-1 m, above 1 m the pressure drop rises sharply and less than 0.6 m reduces the thickness of each filtering layer, thus reducing its efficienciy.

  7. Aquaponics - Wikipedia

    en.wikipedia.org/wiki/Aquaponics

    Aquaponics is a food production system that couples aquaculture (raising aquatic animals such as fish, crayfish, snails or prawns in tanks) with hydroponics (cultivating plants in water) whereby the nutrient-rich aquaculture water is fed to hydroponically grown plants.

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