Filter-Max Pre-Filter Sponges


Pre-Filter Sponges

ATI Filter-Max Pre-Filer Sponges

The Filter Max Sponge Pre-Filter provides filtration of water before entering the main filter. It provides both mechanical and biological filtration. The Filter-Max I and II have the regular sponge while the Filter-Max II has Reticulated Foam, which is useful for high flow situations.


  • Prevents debris from clogging the intake by disturbing the suction evenly down the length of the sponge.
  • Maintains the biological filtration when the main filter is changed or cleaned.
  • Prevents small or baby fish from being suctioned into the main filter.
  • Can be used with most power heads as a temporary or permanent filter in aquariums, isolation tanks, holding tanks, etc.
  • Traps larger waste particles, mechanically cleaning the water.
  • Can be used with most outside power filters and power heads.
  • Includes three adapters for use with various main filter intake tubes.
  • Easy to clean. Just rinse and squeeze under cool running water.
  • Can be used in the vertical or horizontal position.
  • Available in three sizes: Filter-Max I, Filter-Max II, Filter-Max III


Description Sponge Size Tank Size Surface Area (inches)
Filter-Max I 2 x 2-3/4 >10 gallons 30.6
Filter-Max II 4 x 2-3/4 >20 gallons 49.4
Filter-Max III 4 x 3-3/4 >40 gallons 49.4 (Reticulated Foam)

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