I have just got the cannibis grow bible and want to start growing my own, i live in a bedsit in a block of flats in north London. i am looking at onley growing 1 to 2 plants at a time and need to keep the smell down. i smoke weed in my room every day so there is always a level of smell in the house anyway. i was reading up on ionizers and wanted to know how well they work. as my grow room will be in my cupboard. any one got any info? x