Wow. love that setup! That took some engineering and thought but looks like it would work fantastic!
Thanks for the link too, I'll check and see if It's better prices than what I've been paying.
Well worth the money to replace the carbon, rather than buy a new filter for me.
I've built a couple can style, (my first filters), and a small inline (similar but simpler), such as you are using for my drying box.
Had friends gift me their used Can brand filters, but they quickly learned that replacing the carbon was the way to go after seeing their used ones running clean and like new, with no smell outside the room.
(2- Can 50's, a Profilter same as the 50, and 1-Can 100)
The 50's were about $250 each shipped, I re-filled each for $60-$80 bucks
Great info and detailed diagrams. Always impressive Jesselikes2grow!