Well I am looking at carbon filters as so many people say it is an essential thing to have however money is tight and although I am willing to spend I do need to go cheap. I have found that eBay seems to be the cheapest place to get carbon filter + fan for around Â£50 which I can afford. I only plan on growing one or two plants at a time and would like to know if these cheap Buddy carbon filters will do the trick when it comes to odour??? Here is a link to a few I have found 4" In Line Fan, Carbon Filter & Duct Kit - Hydroponic Grow Room Tent Ventilation | eBay HYDROPONICS 4" VENTS TT 2 SPEED EXTRACTOR FAN CARBON FILTER DUCTING CLIPS KIT | eBay grow tent room Extractor Fan Kit with Carbon Filter 100mm 4" | eBay I would love to hear from people who have purchased these Â£50 packages from eBay and what your experience was of the product??