C02

Back in the day people used to "make alcohol" in a soda bottle with a balloon in place of the cap with tiny holes in it to release c02! Does anyone still do this? Gonna put one in my grow closet unless someone has any reason why not?

No need really unless you have a lot of plants packed in there.

SwiSHa85 said:

No need really unless you have a lot of plants packed in there.

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So it wouldnt be beneficial for just one? Why is that?

GanjaaGuruu said:

So it wouldnt be beneficial for just one? Why is that?

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Natural co2 levels are plenty for even 10+ plants given the space is adequate. Cycle in fresh air and that's all you need. CO2 is mostly used in large grows with perfect environment \VPD and very strong lights above 1200ppfd.