[Ice_D-rake]

I am trying to set up a carbon dioxide generator using citric acid and baking soda for my aquarium. For citric acid, I want to use something I have abundant of, which is lemon. What I can't figure is what to do with the remaining products after mixing lemon juice and baking soda. I know that mixing the two will generate carbon dioxide. What can I do the salt, acid (by-standers), and water after the carbon dioxide are gone? Can I do anything with that? I don't want to be wasteful.

[chenbeier]

Not really. If you would use lime instead of baking soda you would get calcium citrate and this can be used further. But we dont give recipe for medicine.

[Ice_D-rake]

Not really. If you would use lime instead of baking soda you would get calcium citrate and this can be used further. But we dont give recipe for medicine.

I read elsewhere that if I add dish-washing soap to the mixture I can still use it for dish-washing. I am not sure if the salt and the acid adds anything to it though.

Is there another mixture I can use that is cheap for carbon dioxide generator that is not wasteful?

The other alternative I found for generating carbon dioxide is to cultivate yeast with sugar, but using edible sugar is very wasteful.

[chenbeier]

You can make beer or wine. You get from sugar carbon dioxide and alcohol.

[Ice_D-rake]

You can make beer or wine. You get from sugar carbon dioxide and alcohol.

But I need the carbon dioxide for my aquarium. Will the beer or wine drinkable after getting rid of the gas?

The thing is that I have a big gap between chemistry and common use.

[Borek]

Will the beer or wine drinkable after getting rid of the gas?

Definitely, that's how fermentation works.