This filter is just great!
I have one question thro, do you guys think i'll be able to use this filter, my exhust fan is the one on my PSU, so i'm wondering if you need a reallly strong fan to be able to use this filter?
iv been wanting to make this, but for the life of me I can only find the larger size pencil cup. Does anyone have an online link for the smaller one?? Will +rep and give you my older sister if you do... Thanks RiU
wow, just realized the brand on the pictures on page 1 were rubbermaid, amazon'd it, and came upon some made by Rolodex.... Sawwweet...
Could you make this carbon filter, and just place it in a corner of your grow box would it still work, if it has to be on a fan is it either the intake or outake?