by Jorge Cervantes
Air Circulation
An oscillating circulation fan is essential in al grow rooms. Mount circulation fans on walls or the ceiling of the grow room. Mount at least one 12-16 inch oscillating fan for every 400-600 watts of light. Mount the fans far enough away from the plants so that the turbulent air makes leaves flutter a little. Make sure circulation fan is not set in a fixed position and blowing too hard on tender plants. It could cause windburn and dry out plants, especially small seedlings and clones. Remove the outer shroud of fans with plastic propellers to reduce resistance on the motor. This will extend the life of the motor and prevent fires.