Ok im new at growing and me and my friend are planning on making a pc grow box with 3 fans 2 exhaust 1 intake, 8 flourescent bulbs and mylar reflex inside a old gutted out computer shell. I have my medical card but my parents dont know and i want to grow but i still live with my parents so this has to be stealthy and odorless. Im not quiet sure how to make a carbon filter thats small enough to filter the smell out of the exhaust fans because this computer grow box will be in my room and look like a normal computer tower thats hooked up to my tv. Please someone help and maybe give me tips on growing in a pc grow box or the design? Thanks!