Blocks
Filtering
Inputs, Outputs and Pipes can have filters set, to set a filter – right click with a bucket (or any other valid container) filled with the fluid. To remove a filter – right click with an empty bucket in your hand.
Open Source
The mod is licensed under the MMPL-1.0, the source code is available on GitHub.
Yes this means you have permission to add it to any public or private mod pack.