Hey peeps! Can I have a successful harvest growing with out c02? Will outside c02 levels be enough ( 400 ppm - 500 pmm ) ? What do you guys think ?
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Absolutely. In fact, it doesn’t make sense for the majority of growers to use supplemental CO2. Specific environmental conditions are required for a plant to use extra CO2. 450 PPM is plenty to raise great bud.
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If you’re gonna use an inline fan then it’s pointless because it’ll suck it out faster than the girls can consume it. Just talk to them when you’re grooming and tending to them.
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absolutely , Good airflow exhaust fan an circulating fans you will be fine.
Happy growing 
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