Re: Diy co2 question I usually make a new batch every 2 weeks. I write the date on the bottle so I don't forget. You will definitely start to see diminished production after about 2 weeks, give or take a little bit pending the amount of yeast you use. I dump the old mixture, leaving just a little of it in the bottom of the jug to kind of help start the next batch. Seems to work pretty well for me. |