Can I double the DIY CO2 recipe?
I think doubling the recipe in the same bottles will just increase the output amount but not do much for longevity once you get to a certain point, because after there gets to be so much alcohol in the bottle the yeast will die even if there is plenty of sugar left. When I used to do diy, I would rarely ever get a full week out of any bottle no matter what I tried. I had two or three and would start them staggered so it wouldn’t all die at the same time. Cooler temperatures will slow it down, but also reduce output. On that size of a tank I would think you would want at least four bottles going.
Edit - just realized you are not using yeast. So disregard what I said about the yeast dying off. But I still think it will just increase output for the same amount of time, unless the bottles are pressurized and you have a regulator on them to keep in the extra co2.
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