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Thread: Pests vs CO2

  1. #25
    Taargus's Avatar
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    I thought the whole point of using the dry ice method was to pour the hot water over it so it quickly filled a tank without freezing the plants in the process. When I mentioned it being too cold coming out of the can i meant for the plants, hands should be fine. How would you get around the temperature problem, spray away from the plants?

    Edit: At the Bronx Zoo to humanely kill large amount of mice and rats for snakes they have a sealed bucket with a tube attached to a CO2 cannister. Open the cannister, the gas goes through the tube and fills the bucket, quick death for mice. I helped a snake keeping friend build this on a smaller scale using a small rubbermaid, a piece of tubing, and a paintball gun cannister. It works like a charm I don't see why it wouldn't work for plants aside from the drop in temperature, but I've never measured the temp drop.

  2. #26
    Av8tor1's Avatar
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    Jim,

    No.... but i can tell you how i would. I would use a covered plastic storage container tote like those you find at walmart.

    Drill one hole in it the size of a tire valve, insert a tire valve. Make another smaller hole on the opposite side, and stuff a cotton ball in it (exhaust side)

    Then simply place the plants in the container, run a strip of ducktape around the lid and then fill with the CO2.

    If you wanted you could place a small tea candle in the container as an oxygen indicator

    This is just me pondering... Ive used these kits for their intended purpose and they did a great job. But, I dont see a reason why they shouldnt work in this application.

    As long as you dont spray it directly on the plant at close range the temp drop shouldnt be significant. The max temperature drop (delta T) will occur at the point of vaporization ( and the greatest pressure drop in this case (delta P) (the nozzle itself))

    (P1*V1)/T1=(P2*V2)/T2

    If need be, just fill it slower to maintain an isothermal condition

    Butch

  3. #27
    RL7836's Avatar
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    Quote Originally Posted by Av8tor1 View Post
    nooooooooo, dont put me in the middle Ron is our CO2 guru...
    All the best,
    Ron
    You must do the thing you think you cannot do. --- Eleanor Roosevelt

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  4. #28
    Av8tor1's Avatar
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    I would hate to wake up with the head of one of my helis lying in bed with me

    (inside joke about the Don of the CP mafia)
    hehehehehehehe

    Butch

  5. #29
    Tropical Fish Enthusiast jimscott's Avatar
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    Quote Originally Posted by Av8tor1 View Post
    Jim,

    No.... but i can tell you how i would.
    LOL! That sounds soooooo OJ Simpson!

    I would use a covered plastic storage container tote like those you find at walmart.

    Drill one hole in it the size of a tire valve, insert a tire valve. Make another smaller hole on the opposite side, and stuff a cotton ball in it (exhaust side)

    Then simply place the plants in the container, run a strip of ducktape around the lid and then fill with the CO2.
    In other words, a reasonably closed environment

    If you wanted you could place a small tea candle in the container as an oxygen indicator
    Or a canary!

    This is just me pondering... Ive used these kits for their intended purpose and they did a great job. But, I dont see a reason why they shouldnt work in this application.
    i'm always thinking outside the box and using things for purposed that which weren't intended. LOL! not everybody appreciates that.... especially in the land of "methods" & "SOP's". Right, Ron?

    As long as you dont spray it directly on the plant at close range the temp drop shouldnt be significant. The max temperature drop (delta T) will occur at the point of vaporization ( and the greatest pressure drop in this case (delta P) (the nozzle itself))



    (P1*V1)/T1=(P2*V2)/T2

    If need be, just fill it slower to maintain an isothermal condition

    Butch
    Isn't that basically the "pervnert formula - pv =nrt?

  6. #30
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    Hey guys,

    I saw some bugs on my plants and decided to try the Dry Ice method to kill them off.

    I used the same method as this guy on a frog forum:

    http://www.dartfrogz.com/easy_pages.php?p=8

    I also did a second bombing about 2 hours later where I put the container into the tank and then poured boiling water on it. I took a video if anyone is interested:

    http://youtu.be/5mQaA9W4TpI

    Hopefully I wont see any bugs anymore. The tank is completely sealed with tape and plastic and I made sure that the CO2 was pouring out of it before I sealed it. I also held a lighter up to it until I wasnt able to light it anymore to ensure no air was left in the tank.

    Checked it out today and saw no signs of bugs and the plants looked fine too. I'll update as days pass.
    cheers,
    Rob
    My CP Page (WIP) See my webpage for my Grow List
    Modified AC for Highland Terrarium

  7. #31
    Tropical Fish Enthusiast jimscott's Avatar
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    I've since abandoned the dry ice idea in favor or Neem oil solution. It does work. It's just not instant death.

  8. #32
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    Quote Originally Posted by robthered View Post
    Checked it out today and saw no signs of bugs and the plants looked fine too. I'll update as days pass.
    Rob,
    Were you able to ID the 'bug'? Supposedly mites are immune to this treatment. Aphids were eliminated in my 1st experience (but w/ more than 1 treatment).

    However, in another trial w/ an aphid-infested D. regia received in a trade, multiple CO2 treatments over several weeks failed to completely eradicate the bad guys (I finally used an imidacloprid pesticide). I'm very interested in why my 2nd series failed, what bugs CO2 can eliminate & hearing about other's experiences.

    I recommend a 2nd treatment in 7-14 days even if you do not see any activity.
    All the best,
    Ron
    You must do the thing you think you cannot do. --- Eleanor Roosevelt

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