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Thread: Baker's Yeast & Sugar = Ethano & Carbon Dioxide

  1. #9
    i dont do pots. amphirion's Avatar
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    in the aquarium world, the DIY yeast reactors are the best for tanks 10 gallons and under.
    the recipe as follows:
    2 CO2 reactors (gatorade bottles- i use 24-34 oz bottles)
    4 cups of sugar
    2 tsp of yeast.

    the reason why this works the best is because of the pressurization of CO2 gas that the yeast creates. i dont know what the steady rate given off by dry ice is but im pretty sure it will be #1 inconsistant, and #2 will disperse rather quickly. with yeast, the reaction takes weeks to complete, and a good amount of CO2 will be released at a steady pressurized state.


    --OR---
    you can get an aluminum tank cylinder, fill it up with CO2, hook it up to a regulator, connect a CO2 approved tubing, place that into your tank, and voila, 5-20 lbs of CO2 gas that could be dispensed in a controlled fashion. this method is rather expensive though. a typical tank costs around $65 bucks, and a regulator is an additional $100. i have both, however, i dont know of any nearby places which i can fill the tank up with CO2--plus, i kinda lost interest in using it :P.


    just a reminder, although you probably already know this: allow your tank to breathe at night. otherwise aphids might not be the only thing you'll be killing in your tank.
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  2. #10
    Hello, I must be going... Not a Number's Avatar
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  3. #11
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    I used sugar and yeast for my planted aquariums as well it works fantastic for that. Never had to worry about a regulator sticking and overdosing the fish as happened to several on the planted aquarium forum.

    I wonder if you made several CO2 reactors and aimed them into an enclosed space if you could get more a higher ppm in the environment to kill the pests.

    Neat dry ice directory, sure aren't many sources around here! LOL

  4. #12
    Let's positive thinking! seedjar's Avatar
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    What's this about a dry ice thread? I was thinking about this before (not for aphids; to kill mice and fleas nesting in my couch x.X ) but don't remember if I made a thread or just bugged Av about it. I think the conclusion I came to was that liquid CO2 was the cheapest by volume, but I'm curious to hear what other people have found.
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    RL7836's Avatar
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    Quote Originally Posted by seedjar View Post
    What's this about a dry ice thread?
    Here's the thread. (Didn't think it was hidden....)

    Quote Originally Posted by cmm889 View Post
    interesting, I've never heard of this method for killing aphids, does it work for other pests?
    In the original post on the frog forum, there was an issue with mites surviving the treatment (also in a follow-up post in the thread by another). I'm very curious to see how well it handles other pests....
    All the best,
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    Frilleon's Avatar
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    There's this too! Still on the expensive side but lasts 60-90 days depending on use.

    http://homeharvest.com/carbondioxideenrichco2boost.htm
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    Quote Originally Posted by Av8tor1 View Post
    When I had planted aquariums I played with the ratios till I got a pretty constant output. It would last a couple weeks too!

    Too much yeast gave a larger output but one that was short lived.

    I used a welch's grape juice bottle that I siliconed an aquarium hose to the lid... IIRC for that size bottle it was a tbl of yeast to a cup or two of sugar... cant remember about the sugar exactly.
    Mixing the sugar into Jell-O, letting it set in the bottle and then adding a solution of warm water, yeast and a little sugar on the top will result in slow and sustained reaction as not all the sugar is available to the yeast initially. The Jell-O will slowly diissolve, freeing up the sugar to feed the yeast.

  8. #16
    Av8tor1's Avatar
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    Quote Originally Posted by mobile View Post
    Mixing the sugar into Jell-O, letting it set in the bottle and then adding a solution of warm water, yeast and a little sugar on the top will result in slow and sustained reaction as not all the sugar is available to the yeast initially. The Jell-O will slowly diissolve, freeing up the sugar to feed the yeast.
    very nice tek!!

    thanks Mobile

    anyone for jello shooters

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