Do I need to have an extractor fan as well? Because I was going to use a cupboard. I'm now thinking of leaving the cupboard doors open and pointing a fan in the direction of the cupboard, but not directly at the plants?If you run higher heat you want lower humidity to prevent mold. Damp and warm are the worst.
Oh, and air circulation is a must during hanging. Fans should be pointing away from the plants but the air should be moving.