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  2. Calcium reactor - Wikipedia

    en.wikipedia.org/wiki/Calcium_reactor

    A pH controller is recommended to control the CO2. It works by connecting to the CO2 regulator on the CO2 tank and measuring the pH of the solution inside the reactor via a pH probe. The controller will turn on and off the flow of CO2 based on the pH inside the reactor. The pH range for the typical calcium reactor is 6.5–6.8.

  3. Aquarium - Wikipedia

    en.wikipedia.org/wiki/Aquarium

    An aquarium (pl.: aquariums or aquaria ... Similarly, carbon dioxide escapes the system into the air. The phosphate cycle is an important, although often overlooked ...

  4. Free Ocean CO2 Enrichment - Wikipedia

    en.wikipedia.org/wiki/Free_Ocean_CO2_Enrichment

    In collaboration with Hopkins Marine Station and the Center for Ocean Solutions, Monterey Bay Aquarium Research Institute is developing a swFOCE system to examine the effects of ocean acidification on shallow subtidal communities in central California. swFOCE will use a shore side station for the control system and production of CO 2 enriched ...

  5. Carbon dioxide - Wikipedia

    en.wikipedia.org/wiki/Carbon_dioxide

    Carbon dioxide is the lasing medium in a carbon-dioxide laser, which is one of the earliest type of lasers. Carbon dioxide can be used as a means of controlling the pH of swimming pools, [139] by continuously adding gas to the water, thus keeping the pH from rising. Among the advantages of this is the avoidance of handling (more hazardous) acids.

  6. Aquarium filter - Wikipedia

    en.wikipedia.org/wiki/Aquarium_filter

    Aquarium filters are critical components of both freshwater and marine aquaria. [1] [2] [3] ... such as water heaters and carbon dioxide diffusers. Such equipment can ...

  7. Liquid carbon dioxide - Wikipedia

    en.wikipedia.org/wiki/Liquid_carbon_dioxide

    Liquid carbon dioxide is the liquid state of carbon dioxide (CO 2 ), which cannot occur under atmospheric pressure. It can only exist at a pressure above 5.1 atm (5.2 bar; 75 psi), under 31.1 °C (88.0 °F) (temperature of critical point ) and above −56.6 °C (−69.9 °F) (temperature of triple point ). [ 1 ]