I've gotten mixed results with this. I want some CO2 injection to hold me over until I have enough for a paintball CO2 system. So I decided to build a dirt cheap DIY CO2 system. I have all needed equipment for the task, and I just need to get my dad to help me drill the holes and I'll build it! I do need a reliable recipe and a schedule for refilling the reactor so I get a steady amount of CO2 injection.
Thank you for your time!!
Heres the recipe I've found most reliable, IMO:
PER 2 Liter Bottle:
1/2 TSP Yeast
1 TSP Baking SODA (not powder)
2 Cups CANE Sugar (not just regular sugar)
Put baking soda and sugar into bottle. Fill up until 4-5 inches from top with warm tap water. Cape, Shake, let sit for now.
Put yeast into a shallow bowl, sprinkle a few pinches of sugar on it, put a few teaspoons of warm water in the bowl. Beat with a fork like a scrambled egg. Let sit 10 minutes. Beat again after 5.
Pour yeast mixture into bottle with sugar, cap and enjoy
I'd suggest redoing this during your weekly water change, but you can probably get 2 weeks out of it. Just watch your drop checker and bubble counter.