i have a CAN carbon filter it is about 15 inches long by 6inches aroun can any one tell me the ruff life oof one of these ???? i am running it off a muffin fan in a dr60 grow tent with a 250hps
There are too many variables to give you a real time. The answer is, when things start to smell again.
Filters can be refilled if the flange isnt welded on.. My filter has a bolted on flange that can be removed to replace carbon..