I have 7 plants vegging right now. See my grow journal if interested entitled "first serious grow" Been vegging for about 5-6 weeks now and am just waiting a few more days to recover from a transplant before switching to 12/12 and putting up the 600watter. I know they are going to smell so I am starting to consider a carbon scrubber. I have read up on all the dyi's etc... What I am really wanting is for someone experienced advise me as to how much scrubber I will need. It is a grow downstairs and I am figuring only 4 or so will be females. I am wondering if one of these small ones will do the job or not. I have no dedicated exhause so I was thinking of just having one free standing. My wife smokes but does not know I am growing the plants. When/if she finds out it wont really be a big deal, but she will not want to smell them as we do have family over and that could be an issue. Please let me know what would be the best way to go under these circumstances. thanks for any help.