Our Classic Filter pads are designed to flow and filter water exactly the same through either side.

You can rinse our ClassicBlue filter pad in a sink. As water flows through it, you can gently squeeze it and you will see a bunch of trapped particles being rinsed out. Depending on your filtration, it can be cleaned and reused a few times.

Yes, the water needs to flow through ClassicBlue pad then through our polishing pad.

Our ClassicBlue Bonded filter pad has an open fiber network which traps small to large particles while our FilterFirst Premium density filter pad has a layer to trap small and large particles as well as a dense bottom later which traps fine particles.

Blue dye will stay on our filter pads because we mix our dye with waterproof glue not water-resistant glue.