Anybody use these?

6" CARBON AIR FILTER SCRUBBER w INLINE FAN HYDROPONIC - (eBay item 180197642289 end time Dec-29-07 13:59:41 PST)
Has anybody tried these? If so how do they work? Thanks guys

go to the grow journals or maybe youtube might show u how to set them up

I know how to set it up, I am just wondering if anybody has tried this one. And if you have tried it how did it work. I can make 1 but by the time i find a fan then build it it is just easier for me to get somthing already to go.