Alka Seltzer for Co2 - The Planted Tank Forum
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post #1 of 21 (permalink) Old 11-28-2009, 09:50 PM Thread Starter
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Alka Seltzer for Co2

Hi all

I have a Hagen natural plant system canister that i don't use and i was wondering if instead of using yeast for Co2, i could fill the canister about half-way with water and drop like 4-5 alka seltzer tablets, close the canister and hook it up with the diffuser-ladder.

Would it work? Has somebody done it?
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post #2 of 21 (permalink) Old 11-28-2009, 11:04 PM
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You would get a big blast of CO2, for a minute or two, then it would drop way down to a bare trickle, and in a day it would produce no CO2 at all. Remember, you only need 2-4 bubbles per second, at most, so compare that to the CO2 production you get from even one AlkaSeltzer tablet. And, you can't store the extra CO2 either, short of rigging up a leakproof balloon to accept it.

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post #3 of 21 (permalink) Old 11-28-2009, 11:23 PM
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Would have been cool though.....
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post #4 of 21 (permalink) Old 11-28-2009, 11:39 PM
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if you have a regulator or a needle valve to slowly release the gas build up, it could work. And the container needs to be air tight and will stand up to some pressure. You probably want to add a cup full of alka seltzer. And don't add the seltzer straight into the tank.


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post #5 of 21 (permalink) Old 11-28-2009, 11:46 PM
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Won't work and/or won't be cost effective.
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post #6 of 21 (permalink) Old 11-29-2009, 01:31 AM Thread Starter
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Ok, thanks for the replies

It was just an idea, i got tired of the fungus-thing of the yeast co2, even using an external bubble counter i could not get rid of it, and cannot afford a pressurized co2 at the moment
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post #7 of 21 (permalink) Old 12-01-2009, 11:32 PM
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Ok, thanks for the replies

It was just an idea, i got tired of the fungus-thing of the yeast co2, even using an external bubble counter i could not get rid of it, and cannot afford a pressurized co2 at the moment
Put a bleach solution in your bubble counter. I used a capful of bleach, and about a cup of water. This was using a 16 oz gatorade bottle as my bubble counter. No more fungus in the tank.


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post #8 of 21 (permalink) Old 12-01-2009, 11:36 PM
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Now that we're going to the absurd, I'd guess that Baking Soda + Vinegar would give better results than Alka-Selzer + Water. It would sure be a lot cheaper. Still doesn't solve the consistancy issue. If you could use an automatic dosing pump to put vinegar into the baking soda you could get your consistancy but at that point it'd probably cheaper to use a pressurized system.
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post #9 of 21 (permalink) Old 12-01-2009, 11:38 PM
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...but at that point it'd probably cheaper to use a pressurized system.


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post #10 of 21 (permalink) Old 12-02-2009, 01:00 AM
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You could also buy dry ice and find a way to capture the CO2 gas and hold it under pressure. But, the risk to life and limb might make that one a bit iffy. And, you would still need the regulator/needle valve that a regular pressurized CO2 system uses.

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post #11 of 21 (permalink) Old 12-02-2009, 01:29 AM
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You could also buy dry ice and find a way to capture the CO2 gas and hold it under pressure. But, the risk to life and limb might make that one a bit iffy. And, you would still need the regulator/needle valve that a regular pressurized CO2 system uses.

Not to mention the pressure vessel to hold all the gas as a reasonable size....


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post #12 of 21 (permalink) Old 12-02-2009, 02:54 AM Thread Starter
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yeah, thanks

i'll try to get along with excel, and start saving for a pressurized system
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post #13 of 21 (permalink) Old 12-02-2009, 05:48 AM
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We are all just trying to help

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post #14 of 21 (permalink) Old 12-05-2009, 12:09 AM Thread Starter
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thanks a lot, it was just an idea i had, maybe i'll try diy co2 again, but it's too much hassle, and a pressurized co2 for a 2.5g is not worth it
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post #15 of 21 (permalink) Old 12-05-2009, 01:50 AM
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thanks a lot, it was just an idea i had, maybe i'll try diy co2 again, but it's too much hassle, and a pressurized co2 for a 2.5g is not worth it
I'm using a 10lb pressurized system on my 2.5g nano

Anthony


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