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Plants produce Oxygen and Carbon?

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  • Plants produce Oxygen and Carbon?

    I know that plants take in Carbon and produce Oxygen during photosynthesis, but is it true when the lights are off that plants take in oxygen and produce carbon?

  • #2
    I have heard that about algaes not sure about anything else though
    2.5g Betta tank (Rayne)
    2.5g Apple Snail tank (Silver)
    1.5g Saltwater MTS vase (tough little dudes)
    40g red ear slider tank (Kappa)
    "Normal is just an illusion. What is normal for the spider is chaos for the fly." -- Morticia Adam

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    • #3
      Yes it is true. This is why CO2 is off when the lights are off.

      With injection I start my CO2 about 1 hour before lights come on; and turn off 1 hour before the lights go off so that the CO2 has a chance to be consumed.
      - Dena

      All our dreams can come true if we have the courage to pursue them.
      Walt Disney

      The only true wisdom is in knowing you know nothing.
      Socrates

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      • #4
        For that one hour when lights are off...and CO2 is on, aren't you afraid of suffocating your fish?

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        • #5
          Nope. It takes a while for the pressure to build up in the CO2 line and I want it to build up slightly before the plants again consume it. Plus, there is natural light in my room, it isn't 100% dark, so I figure the plants would be starting to change gears. Anyway, it works for me. The fish are their usual greedy selves in the morning.
          - Dena

          All our dreams can come true if we have the courage to pursue them.
          Walt Disney

          The only true wisdom is in knowing you know nothing.
          Socrates

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          • #6
            Mine is on 2 hours before lights and off 45 min. Before lights off.
            Christine

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            • #7
              Seems like I have to get another timer.

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              • #8
                Yes, you'll need one timer for the lights and another one (or a pH Controller) for the CO2.
                - Dena

                All our dreams can come true if we have the courage to pursue them.
                Walt Disney

                The only true wisdom is in knowing you know nothing.
                Socrates

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