CO2 Questions

Discussion in 'Planted Aquarium Tech' started by TroyZ, Oct 7, 2013.

  1. TroyZ

    TroyZ Active Member

    I'm doing a DIY yeast CO2 system. I'm wondering when I should have it running and shut down. So many different opinions are out there. What works for you guys?
  2. Natives2WI

    Natives2WI Well-Known Member

    mine continuously runs, if that is what you mean.
  3. TroyZ

    TroyZ Active Member

    It is what I mean. I've read that plants emit excess co2 at night or when lights are off causing an influx of co2 becoming toxic to fish, especially when running a co2 system. Thoughts?
  4. gordon

    gordon Active Member

    It is difficult to produce too much CO2 using DIY yeast generator. You would have to have a small tank < 20 gallon and packed with healthy plants for you to have a DIY C02 issue. Actually the problem is not too much CO2 , but is a lack of oxygen in the tank. Plants use oxygen from the water and give off CO2 at night ( resperation). Some tanks that are heavily planted can have low oxygen issues in the morning before the lights come on, but generally if the plants are creating enough oxygen by the evening ( bubbling) there is enough oxygen to carryover until lights on in the morning.

    Compressed C02 is usually turned off when the lights go out.
    Cinnamonsticks likes this.

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