About a week ago I was at my LFS and saw a “disposable co2 can kit” for $10. Since I have been wanting to get into co2, but just didn’t want to spend $500+ on a pressurized co2 setup, I bought it. It uses the passive method to get co2 into the tank. It is on a 29g, so my thought is that it isnt diffusing (?) enough co2 into the tank. Anyone have success with this “passive co2” method?