Filtaroo™ Filter gets the best Australian charcoal (carbon) virgin in the world and extracts from old deposits of millions of years. Its triple action provides better quality. Coal is selected and screened only for Filtaroo™Filter, so the carbon filter is much better balanced with a better ability than all other filters on the market. Our Australian coal RC412 has the best absorption capacity of the market. 1 gram of carbon RC412 covers an area up to 1000m².