Carbon filter for bong? I'd imagine it'd make it smoother, but at the same time reduce potency of the hit. That's just seems weird. Ice and water's the only filters I need for green.
KickYoAss Reviewed by KickYoAss on . carbon filter -making of Assembly of a homemade carbon filter. I used two 8"-6" reducers, a 6" and 8" plug, 12 screws, chicken wire, door screen, some aluminum foil tape, and a crapload of zip ties. Only thing left now is to fill it with carbon that I ordered, and hook it up to my 250 watt attic fan, wooooeeee. Materials cost around $25, 27 pounds of carbon for $49. Rating: 5