Air in versus air out of your grow room
October 30, 2007
Air in versus air out….probably go for more air OUT than in if your climate is humid/damp.
If you live in a dry climate, AIR IN is probably more important.
Extraction of air lowers humidity and a 50% humidity or rH is the recipe for indoor growing success.
Too wet or humid, the plants will sweat – you’ll see spots of water on them. In that case increase air extraction or use a humidifier. Your flowers may also go mouldy so too much humidity is definitely a bad thing. It is not something too bad during vegetation stages of growth and tolerable. Make sure you’re not using too much plastic sheeting as this will increase humidity.
Too dry, that is easy to fix. Just put buckets of water in the room and spray the plants with some water a couple of times a day.
As a rule I use 250m3 extraction and a 100m3 intake. The reason for more extraction is as above, too dry is OK and easy to fix, too wet very bad and harder to fix. And it removes any bad smells too using a carbon filter on your 240m3.
