^^^ Second that! Don't throw them out. Just save them for an emergency.
Here is an idea of my FX5 media:
Bottom tray is filled with Fluval Biomax.
Second tray is filled with Ehiem ProSubstrate.
And top tray is filled with poly fibers.
Here is an idea of my FX5 media:
Bottom tray is filled with Fluval Biomax.
Second tray is filled with Ehiem ProSubstrate.
And top tray is filled with poly fibers.