Hey guys thank you for viewing this if you did! I have a 6x4x 8 foot tall flower room i made out of 2x2s and panda film plastic. this is connected to my 4x4x8 veg room made the same. but this post is for the flower room in which I am running a 1000 watt hps 6 inch cool tube on a digital ballast outside of the room. i am going to be using dwc to grow. i bought a 4 inch hurricane fan because it was what i could afford at the time. i have been planning and buying and constructing for ayear now and am down to my last detail! what carbon filter to use and what size. My first grow will be barneys farm vanilla kush. Anyyyyyy advice will be taken with the highest regard i have no one to talk to as this is a stealth operation