Hi guy's im Vic new to growing and the site got some seeds planted them and what do you know they grew , now starting to smell a little been reading up and thinking of getting a ona pro block 1ltr but i was looking about and seen people were making there own carbon filters using PC fans so i gave it a go tonight, its very basic metal circular makeup box about size and shape of a 3ltr tin of paint best way i can descibe it, daughters before you ask lol has airholes all round the sides and a zipped lid witch i kept just made a hole in the lid and connected PC fan and used a pair of tights to cover the holes so no charcoal would get blown out the side holes, fan is 12v but adaptor is 30v is this ok or should i use a smaller adaptor going to pet shop for activated carbon and some filters will this help keep the smell down im growing in a closet 9ft tall 5ft by 2ft at the moment there is 7 plants 4 weeks and help would be appreciated thanks. pads will go to the top and bottom with carbon in the middle what do you think guys would this work?