Re: My DIY CO2 it's not producing bubbles.
Doesn't look like the yeast is alive to me. You should have fizzing going on in there. I mix the water in the bottle with the sugar and a pinch of baking soda thoroughly until the sugar is dissolved completely.. The water is about 120°. Then I take a cup of that water and add my yeast to it and allow it to "proof". About 15 minutes the yeast should be foaming nicely. THEN I add it to the bottle mixture and cap. This seems to work 100% of the time. Try using the bottle water that way and see if you get joy.