Charcoal filters are an essential element to mask annoying odors during your indoor growing. These filters are made with activated carbon powder which has the particularity of retaining the odors that pass through it. For this to work, you will need to connect it to an air extractor, however it is advisable to connect its carbon filter for indoor growing to an extractor of the same diameter. This is because if you put a smaller charcoal filter than you need, it will reduce the power of the extractor and shorten the life of the extractor. Discover the best brands of activated carbon filters on the market with Bullfilter australian carbon, Phresh filter usa, prima klima filter, hy filter carbon or can filter original. Our filters absorb 99.9% of bad odors. The delivery is free from 59€ of orders for metropolitan France.