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  2. 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.

  3. Calcium reactor - Wikipedia

    en.wikipedia.org/wiki/Calcium_reactor

    The reaction frees the calcium and carbonate, supplying the aquarium with water rich in Ca 2+ and CO 3 2−, important for maintaining alkalinity and calcium levels. A bubble counter is used to visually (or audibly) measure the carbon dioxide rate (bubbles per minute).

  4. Dealkalization of water - Wikipedia

    en.wikipedia.org/wiki/Dealkalization_of_water

    When alkalinity is the limiting factor affecting the amount of blowdown, a dealkalizer will increase the cycles of concentrations and reduce blowdown and operating costs. The reduction of blowdown by dealkalization keeps the water treatment chemicals in the boiler longer, thus minimizing the amount of chemicals required for efficient ...

  5. Alkalinity - Wikipedia

    en.wikipedia.org/wiki/Alkalinity

    Alkalinity (from Arabic: القلوية, romanized: al-qaly, lit. 'ashes of the saltwort') [1] is the capacity of water to resist acidification. [2] It should not be confused with basicity, which is an absolute measurement on the pH scale. Alkalinity is the strength of a buffer solution composed of weak acids and their conjugate bases.

  6. Recirculating aquaculture system - Wikipedia

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

    All fish species have a preferred temperature above and below which that fish will experience negative health effects and eventually death. Warm water species such as Tilapia and Barramundi prefer 24 °C water or warmer, where as cold water species such as trout and salmon prefer water temperature below 16 °C. Temperature also plays an ...

  7. Aquarium fish feed - Wikipedia

    en.wikipedia.org/wiki/Aquarium_fish_feed

    Aquarium fish feed is plant or animal material intended for consumption by pet fish kept in aquariums or ponds. Fish foods normally contain macronutrients , trace elements and vitamins necessary to keep captive fish in good health.

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  9. Silver dollar (fish) - Wikipedia

    en.wikipedia.org/wiki/Silver_dollar_(fish)

    The silver dollar is a peaceful schooling species [1] that spends most of its time in the mid- to upper-level of the water. Its average lifespan is less than ten years but can live longer in captivity. A benthic spawner and egg scatterer, the adult fish will spawn around 2,000 eggs. This breeding occurs in soft, warm water in low light.