Mrnicesmoke.
My grow room is located in my bedroom. I installed 1 fan in top part of grow room, but it didn't cut it. Since then I leave the door to my room open to let some fresh air in. Inside the room I am rinning a tower fan that has two small fans inside the unit. Circulation of the air in the room seems good, although I have had days where it seems a little stuffy in the bedroom. I try to leave my bedroom door open to get air from the rest of the house or I'll crack the window a bit to get outside air. Now that winter is here its hard to crack the window. -20c outside. If i crack the window at this temp the air coming in is way too cold. I know I could heat the outside air, but was trying to keep things to a minimum.
Just had one plant grow another inch overnight. Without any light.
Oh, by the way I turn my fan off at night.
Another tidbit. Some of the plants are now showing sex, (I hope). Since I have never grown this type of plant before am still a little unsure.
Seeing some white hairs. I'm sure I'll know more soon.
Cheers.