Put your 4" exhaust on top with duct going to a 4x4 container of wood with an exhaust of a smaller diameter coming from your box to an unoccupied space or outside. Inside the box put an O3 generator, you can easily build one with a neon sign transformer and a couple jars for cheap. O3 kills odor better than anything and you never need to replace carbon or anything. Dont put it in your grow chamber O3 could damage your plant. Put the transformer on a timer and emperiment with what timing you need to controll your odor. You could also stuff the final exhaust with dryer sheets to give it some back pressure and as a final filter of some sort.
Cyclonite Reviewed by Cyclonite on . Problems with odors. (FIRST POST!) So, after nearly 10 minutes of persuading, my grandma -with whom I live- has agreed to let me grow my own weed, under certain conditions. 1. I can not sell it, which will not be a problem, since I will be producing it for my own consumption. 2. I have to find a cheap way to control the smell. She says she won't buy an air purifier. Now, my grandma knows all about weed and the lies the government makes up (she used to be a hippie!) so she agreed to let me grow on these Rating: 5