Co2

Is there another way to get CO2 to the plant other than a tank?

sugar+ yeast+ water= co2 but its messy

co2 burner.

you can stand in their and breath really hard all day long just make shore you keep your head low.. lol just joking you tube co2 and a kid on their will show you how to do the yeast and sugar thing. he builds it for a fish tank but it works the same for plants