hah, okay i made one, what do you think? its a pretty low budget filter and i hope it works. i used regular screen for windows on the outside, packed it with carbon pellets from petsmart and sealed the other end off with carbon prefilter. Hope it works!

hah its not me, its not even my plant anymore im just kinda the builder guy.
I also moved out here to cali about a month ago and just never got around to changing it.