Easy-to-install aquarium pre-filter for added mechanical filtration
Attach Filter-Max to powerhead or aquariums filter intake tube
Foam sponge filter traps aquarium debris to prevent filter damage
Simple aquarium filter upgrade for under $10! Enjoy added aquarium filtration with the easy-to-install Filter-Max Pre-Filter. Simply attach the versatile pre-filter on powerhead, power filter or canister filter intake tubes to trap aquarium debris before entering the main filter. Foam sponge filter supplements both mechanical and biological filtration. Great for freshwater or saltwater aquariums containing small fish or delicate invertebrates that can be injured by conventional strainer style intake tubes. Includes three fittings (adapters) for vertical or horizontal installation on various powerheads and filter intake tubes.
Surface area of sponge (Sq. In)
2" x 2-3/4"
Up to 20 gallons
4" x 2-3/4"
Up to 40 gallons
4" x 2-3/4"
Over 40 gallons
*Reticulated filter foam for higher flow rates.
Please click on "More Information" for instructions.
Attach the end cap to the flanged end of the strainer.
Rinse and squeeze sponge under water.
Slip sponge on strainer.
Select position desired for filter.
For horizontal position use one elbow. For vertical position, use both elbows.
Select adapter size for intake of main filter.
Rinse the sponge with cool running water weekly. Do NOT use hot or very cold water as this will destroy the bacteria which colonize the sponge.
Do NOT use soap or detergent when rinsing the sponge.
The Filter-Max Pre-Filter provides filtration of water before entering the main filter. It provides both mechanical and biological filtration. Aerobic bacteria colonize the sponge, providing a bacterial substrate to facilitate the nitrogen cycle.
Advantages of the Filter-Max Pre-Filter
Maintains the biological filtration when the main filter is changed or cleaned.
Prevents debris such as dead fish and plant material from clogging the intake by distributing the suction evenly down the length of the sponge.
Prevents small or baby fish from being suctioned into the main filter.
Can be used with most powerheads as a temporary or permanent filter in aquariums, isolation tanks and more.
Traps larger waste particles to mechanically clean aquarium water.
Prevents anemones and invertebrates from being suctioned into the main filter.
Can be used with most external power filters, canister filters and powerheads.
Includes three adapters for use with various main filter intake tubes.
Can be use in the vertical or horizontal position.
Easy to clean. Just rinse and squeeze.
Available in three sizes: Filter-Max I, Filter-Max II and Filter-Max III.
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