Bob has A space in a cupboard A fridge with fan inside with heat hot/cold control A light A heat light 3 plants Cheese/yarde and some haze A fan replacing the air inside with fresh air everything nice and white All rigged up to timers Dose bob need a carbon filter ? and can he make one? are they safe? Bob had just started his first time grow it is day 3 now not much has happend yet? any tips ?