Ventilation is a very important part of having control over the temp and humidity. In other words, a fan is crucial. [https://www.youtube.com/watch?v=gYxLbBP3evM Blower (centrifugal fans) should be used for this type of ventilation]<ref>Centrifugal Fan vs Axial Fan | Industrial Accessories Company - https://www.youtube.com/watch?v=gYxLbBP3evM </ref>