.I'm still trying to work on the exhaust on my grow box I was looking on htgsupply anD they had a 4 inch inline fan and a 8 which one do you think I should run to tryand cool it down and I will have a filter on it there will be 6 26watt in there or should I go with the 42 I just don't want it to get to hot in there. And will these inline be pretty good they are cheap one 19.95. And the other is 29.99 thanks
