Plant thriving with cool fresh air

[PhatJay]

what are your thoughts on this

I may be teaching my grandmother to suck eggs here, so apologies if this comes across as patronising. In the earlier parts of our planets history the composition of the atmosphere was very different. It contained a much larger proportion of CO2 than it does today (mainly because plants were so good at using CO2 and putting out O2 that they have changed our planets atmosphere) Plants can use 5 times as much CO2 than is available in the air, so airflow is an important factor in good growing. I seem to recall that it is recommended that the air in your grow space is replaced every 5 minutes.