carbon fitler helpp??

i'm on a budget so haven't got enough money for a carbon fitler,
i have:

a cardboard box
2 pc fans intake
2 pc fans outake
a propagator for germination
and 125w cfl 6500k (goin to attempt and grow from seed to flower)

is there a way to make your own carbon fitler if there is please help and leave instructions, peace

cmin peoplee helpp needed

You are still going to need to buy the activated carbon -- which is about $6 at a fish supply shop. (Un;ess you have some charcoal around). You can find directions for making them all over this forum and at startpage.com -- I found a $15 carbon filter that plugs into the wall. Its not the best but it works for now, its called "trueair" and i found it in the home improvement section (near the electrical timers actually) at walmart.