I have a 300 cubic ft grow room with a 1000w mh/hps light (w/ cooling fan) and four flourescents. 6" duct that is going to be ran roughly 25 feet, with a inline carbon filter that ends into a a home made 5 gallon bucket with 25lbs of activated carbon. I was planning on using a inline fan outside of the temple with 425 cfm rate near the end of the flex duct. please share your thoughts even if I am being retarded,