Drying Room - Fresh Air or Circulation?

Grow Guides Drying
1

Taking in consideration that the drying room is equipped with a HVAC system without ventilation.

Does the drying room need fresh air intake and ventilation ? Or Air circulation through the HVAC is enough ?

Do you need oxygen during drying ?

If you don’t have fresh air and ventilation what about the chlorophyll smell ?

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2

What do you mean has hvac? Like a window unit, mini split, or shared building unit?

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