A Ackmo Active Member Jan 13, 2011 #1 OK 250w HPS open air reflector in a 2 1/2 x 2 1/2 x 5 diy grow tent. What is the minimum CFM fan i can use? How close to the plants can I keep it?
OK 250w HPS open air reflector in a 2 1/2 x 2 1/2 x 5 diy grow tent. What is the minimum CFM fan i can use? How close to the plants can I keep it?
