Is a carbon filter 100% effective?

I own a 12" cbf used in conjunction with a 180 cfm inline fan. My box is only 4' high and 100% sealed except for a passive intake on the bottom. I am curious as what to expect in terms of smell. Whats your experience your carbon filter and negative pressure?

No carbon filter is going to be 100% effective, but if all you are trying to do is remove the smell, well that is what a carbon filter will do for you - as long as you have one big enough to support the cfm you are putting through it. Always try to set it up so that you are sucking air through the filter rather than pushing it through.

They work pretty dam good though, keeps all my smell in the box.

They work pretty good, near harvest I usually add a dryer sheet to the filter to catch that last little bit, the new ones with Febreze (tm) work the best for me.

I stopped using dryer sheets a long time ago, reason being ----> http://www.naturalnews.com/002693.html

Ummm... don't wear it but put it in your filter, on the exhaust side? Sorry man, being facetious but there are no facts in that article, more FUD to scare up a few more hits on a web site. Good to be aware though.