thnx for the help so so far.

kinda adding to the earlyer question but how big of a carbon scrubber do you need and how often do you need to change the filter?

Also what is the expected life span of the carbon? how often do i change it?

looked at the http://boards.cannabis.com/growroom-...on-filter.html and just wonder how big is needed. have a 3' x 6' space