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CO2 injection

Discussion in 'General Plant Topics' started by stonecutter50, Feb 16, 2006.

  1. stonecutter50

    stonecutter50 Junior Poster

    Jan 12, 2006
    Likes Received:
    I finally got my hands on a 10lb co2 cylinder and the appropriate regulator with a solinoid to shut it off at night. My next question is: What is the best way to inject the CO2 into the water. I've used a simple hagen bubble ladder in the past, but after reading the posts here, I've switched to a coralife wooden 'airstone' that gives off very small bubbles. This seems to work well, however I'm intrigued with Tom's venturi design and am wondering now if I should give the venturi a try. In your experience, would it make much of a difference to the bottom line of growing plants?

    Thanks for all your help so far. It seems the more I get addicted to this hobby, the more questions I need answered.
  2. brad

    brad Prolific Poster

    Aug 2, 2005
    Likes Received:
    Re: CO2 injection

    I`m much happier with my reactor than a simple diffuser. That said, you could also use a powerhead to blow the bubbles from your diffuser into the plants. That seems to be what works best but I do think the venturi reactor is much better than simply letting the bubbles rise to the top.
  3. Tom Barr

    Tom Barr Founder
    Staff Member Administrator Social Group Admin

    Jan 23, 2005
    Likes Received:
    Re: CO2 injection

    Well, you can use either, but given the stuff you have, you may just want to use the limewood stones, blast the mist around with your filter outflow in a downward direction into the plant beds.

    But the DIY reactor is also cheap and fun to watch and works very well also.
    Turn the CO2 off at night though.

    Tom Barr

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