The Planted Tank Forum - View Single Post - Citric acit - Baking soda Co2 - Pressure dropping
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post #2 of (permalink) Old 04-26-2019, 04:53 PM
Malakian
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There are so many variables here its hard to tell excatly whats going on but, the reaction that produces co2 is rather fast, so it will stop quickly. All that is left is the co2 in your bottle, unless its highly pressurized (a standard soda bottle takes about 100psi before bursting) thats not a big amount of co2.

So if there is no bubbeling and the bottle is soft, the reaction has stopped and there is no more co2.

The reason most don't use this as it will only work with very small tanks. As the co2 produced and stored in the bottle is all you have to work with. It could work if you used some chemistry to determine how much baking soda and citric acid you need to produce a spesific amount of co2. Then use those numbers, and make a device that will add more reactants when the reaction stops. This is gonne be very complex and probably more expensive than a regulare pressurized co2 setup.


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