Seems like alot of work to simulate a 80$ Filter that'll last at least 6 months in smaller area.

I don't think it'll work the same either..

Invest in a real Carbon filter.
BobBong Reviewed by BobBong on . BBQ charcoal. Hey, I need to make a carbon filter for my grow and I have lots of BBQ charcoal briquettes. If I were to crush them, does anyone know if this would this work in an air filter? Ta. Rating: 5