We stock a variety of carbon filters which prevent bad odor escaping from indoor grow tents and grow areas. From the Australian Carbon in the phresh filters, to premium african carbon in the Can Lite Filters, both are trusted brands. Expect your carbon charcoal filter to last up to 2 years in areas of high humidity, e.g. Brisbane, or even longer in drier areas down the southern areas of Australia. Grow tent filters are a must for controlling herb and flower smells.