A question from a fellow grower:
Here’s a question…im thinking of using two 120mm PC fans for exhaust & intake. I purchased some carbon filter sheets (5"x7" size, 1/8- 1/4" thick?) to go over the fans. What would you suggest? My grow box is 42.7" x 21.4" x 18" Rubbermaid storage tote…stood on end. Lights are hanged from top @ slight diagonal. Also gonna have small desk fan mounted towards top to add a breeze. Any and all thoughts appreciated.