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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. 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.

  3. Recirculating aquaculture system - Wikipedia

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

    The first step of nitrification in the biofilter consumes alkalinity and lowers the pH of the system. Keeping the pH in a suitable range (5.0-9.0 for freshwater systems) is crucial to maintain the health of both the fish and biofilter. pH is typically controlled by the addition of alkalinity in the form of lime (CaCO 3) or sodium hydroxide (NaOH).

  4. List of freshwater aquarium fish species - Wikipedia

    en.wikipedia.org/wiki/List_of_freshwater...

    A highly spirited fish that may occasionally chase its own species as well as harass slow moving fish with long fins. This fish is very hardy and can stand a variety of water qualities. Disease is not a big problem with the black tetra. The black tetra is also known as the black skirt tetra.

  5. White Cloud Mountain minnow - Wikipedia

    en.wikipedia.org/wiki/White_Cloud_Mountain_minnow

    The White Cloud Mountain minnow ( Tanichthys albonubes) is a hardy species of freshwater fish and coldwater fish often kept in an aquarium. The species is a member of the carp family (family Cyprinidae) of the order Cypriniformes, [2] native to China. The White Cloud Mountain minnow is practically extinct in its native habitat, due to pollution ...

  6. Freshwater aquarium - Wikipedia

    en.wikipedia.org/wiki/Freshwater_aquarium

    Freshwater aquarium. A freshwater aquarium is a receptacle that holds one or more freshwater aquatic organisms for decorative, pet-keeping, or research purposes. Modern aquariums are most often made from transparent glass or acrylic glass. Typical inhabitants include fish, plants, amphibians, and invertebrates, such as snails and crustaceans.

  7. Calcium reactor - Wikipedia

    en.wikipedia.org/wiki/Calcium_reactor

    Calcium reactor. A calcium reactor is an efficient method to supply calcium and trace elements to a reef aquarium. Reactors may be used in elaborate freshwater and brackish aquariums where freshwater clams and other invertebrates need a constant supply of calcium. In marine and reef aquariums, a calcium reactor dissolves a calcium carbonate ...

  8. Community aquarium - Wikipedia

    en.wikipedia.org/wiki/Community_aquarium

    Most freshwater aquarium fish do well in water that is soft to moderately hard, and that has a pH between 6 and 8. Brackish water aquaria are a special case and need dedicated community tanks. While a few freshwater and marine fish can adapt to brackish water, most cannot.

  9. Burmese border loach - Wikipedia

    en.wikipedia.org/wiki/Burmese_border_loach

    The Burmese Border loach, angelicus loach or polka dot loach, Botia kubotai, is a recently described species that has quickly become a popular tropical fish for freshwater aquariums. In 2002, fish collectors working in western Thailand began to expand their search into Myanmar ( Burma) area from the Three Pagodas Pass Thai-Myanmar border to ...

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