Hi all. I have a 10x10 garden and am bringing in air from a 4in fan and sucking out the room with a 8in fan connected to the lighting through duct. My question is how long do I run my 8in fan for? I have been running it for 24 hours and noticed fan leaves dying out. Are they dying because it should not be pulling out at a constant pace? The room seems to get very hot whenever I have tried to turn it off for even 10 minutes. Please help me with your opinions. Thanks!