I didn't know that activated carbon could be used as a dessicant! So u can dry ur buds out in ur air filter after u've finished a grow = no more mouldy jars
honest! It works! result today tho - as part of a contract, I service industrial stuff regular. sometimes it doesn't even need doing, but I do it anyway cos I r proh........ anyway, I'm not throwing 12 x 3mth old 400cfm activated carbon filters in the skip.... there's a gauge on top that tells me the condition of the filter elements & these where all flatlined = as new I intend to put them to good use