Passive Ventilation Without the Use of Mechanical Ventilation février 4, 2023 admin CBD News 2 What is passive ventilation? An economical way to leverage natural airflow to your benefit in the greenhouse. This can be … Check on YouTube HomegrownCannabisCoRecommended
What a pitty that this only works for greenhouses. Even in a Passive-House an indoor-stealth-garden is hardly to be ventilated passively.
Yep, pretty much