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  2. Calcium reactor - Wikipedia

    en.wikipedia.org/wiki/Calcium_reactor

    The controller closes the valve as the pH falls below this level. Dual chambered calcium reactor. Some pH controllers have an interface for an air pump. This air pump is connected to an airstone in the sump or main tank. If the probe detects a low pH level, the pump activates. The bubbles raise the pH by dissipating the CO 2 gas.

  3. Ocean acidification - Wikipedia

    en.wikipedia.org/wiki/Ocean_acidification

    In an experimental aquarium facility, clownfish were sustained in non-manipulated seawater with pH 8.15 ± 0.07, which is similar to our current ocean's pH. [115] To test for effects of different pH levels, the seawater was modified to two other pH levels, which corresponded with climate change models that predict future atmospheric CO 2 levels ...

  4. Ocean acidification in the Great Barrier Reef - Wikipedia

    en.wikipedia.org/wiki/Ocean_acidification_in_the...

    Levels of aragonite have decreased by 16% since industrialization and could be lower in some portions of the Great Barrier Reef due to the current, which allows northern corals to take up more aragonite than southern corals. [17] Aragonite is predicted to reduce by 0.1 by 2100 which could greatly hinder coral growth. [17]

  5. Recirculating aquaculture system - Wikipedia

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

    A low pH will lead to high levels of dissolved carbon dioxide (CO 2), which can prove toxic to fish. [12] pH can also be controlled by degassing CO 2 in a packed column or with an aerator, this is necessary in intensive systems especially where oxygenation instead of aeration is used in tanks to maintain O 2 levels. [13]

  6. Root effect - Wikipedia

    en.wikipedia.org/wiki/Root_Effect

    The Root effect is a physiological phenomenon that occurs in fish hemoglobin, named after its discoverer R. W. Root.It is the phenomenon where an increased proton or carbon dioxide concentration (lower pH) lowers hemoglobin's affinity and carrying capacity for oxygen.

  7. Harlequin rasbora - Wikipedia

    en.wikipedia.org/wiki/Harlequin_rasbora

    The fish will live in an aquarium in waters ranging from a pH of 6.0 to 7.8, and hardness ranges from zero to 15°dH. However, while for maintenance purposes water chemistry is not critical provided that cleanliness of the aquarium is maintained, for breeding purposes the water chemistry becomes considerably more so (see below). The temperature ...

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