The FTB Forum is now read-only, and is here as an archive.
To participate in our community discussions, please join our Discord! https://ftb.team/discord
A bit late IK but I also had this issue so I thought I would share what I found online.
Filters need to be connected to an inventory for either input or outputs.
Also, an issue in addition for this for me, using ALL vacuum ducts seem to ignore filter regardless of anything.
