DIY CO2, bubbles not forming in bottle
I have a dilemma. A long time ago I could make DIY CO2, but the last three tries I have failed. I tried again just a few minutes ago, and I know it's too early to tell if it worked, but I doubt it's going to bubble. Here's what I did:
1) Applied another layer of hot glue to the soda bottle cap and the air tube just to make sure there are no leaks.
2) Put 2 cups of sugar and 1/4 tsp of yeast in the bottle.
3) Filled a small amount of the bottle with cold water, and then filled the rest with hot water, to make it warm.
4) Added Prime.
5) Shook the bottle.
6) Hooked up to tank.
Right now I'm seeing the yeast particles just floating in the mixture. I'm pretty sure this means it's dead. And this was a brand new pack of yeast too! If I'm doing anything wrong, please tell me. Thanks.