update......this doesn't seem to work to well in a large room even with only a few plants in it,due to the fact that it can't move alot of air.it can't even kill the vegging smell in my room where i have 28 plants.but worked great in my cabinet and closet where i was flowering and drying 4 plants.Of course it is possible that i need to change the carbon...it is about 6 or 7 months old.when i do that i will let you know if things improve.
c of green Reviewed by c of green on . ? i have seen some how to carbon filter threads but the average cost after the fan is $150+.i am getting ready to build another 10$ carbon filter and was wondering if you would like a how to?it is good for a small cab grow or a drying room.i currently have one in my veg with 18 plants...cant smell a thing unless i put my nose to the plant(then it is quite potent) Rating: 5