Gmix said:

you need a sealed room to run co2 without one your wasting your time.

The worst are the co2 bags new growers fall for closely followed by the yeast method

A total waste of time
Adding a cigarette will do nothing good

You need tanks of co2 to make a difference in a sealed room

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Markjobs2020 said:

So it has to be closed loop so your not just sucking it all out

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