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Easy-to-install aquarium pre-filter for added mechanical filtrationAttach Filter-Max to powerhead or aquariums filter intake tubeFoam sponge filter traps aquarium debris to prevent filter damageSimple 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.andnbsp;Sponge SizeAquarium SizeSurface area of sponge (Sq. In)Filter-Max I2" x 2-3/4"Up to 20 gallons30.6Filter-Max II4" x 2-3/4"Up to 40 gallons49.4Filter-Max III4" x 2-3/4"Over 40 gallons49.4 Reticulated filter foam for higher flow rates.Please click on "More Information" for instructions.

Easy-to-install aquarium pre-filter for added mechanical filtrationAttach Filter-Max to powerhead or aquariums filter intake tubeFoam sponge filter traps aquarium debris to prevent filter damageSimple 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.andnbsp;Sponge SizeAquarium SizeSurface area of sponge (Sq. In)Filter-Max I2" x 2-3/4"Up to 20 gallons30.6Filter-Max II4" x 2-3/4"Up to 40 gallons49.4Filter-Max III4" x 2-3/4"Over 40 gallons49.4 Reticulated filter foam for higher flow rates.Please click on "More Information" for instructions.

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Provides the necessary mechanical filtration to remove larger debris from aquarium water without clogging or interfering with your filter's operation. Consists of chemically inert ceramic, suitable for both fresh and marine aquariums. Rinse to remove any dust before using. Place Fluval Pre-Filter Media in the lowest filter module. When reusing, rinse with aquarium water from a water change. 750 g.

Easy-to-install aquarium pre-filter for added mechanical filtrationAttach Filter-Max to powerhead or aquariums filter intake tubeFoam sponge filter traps aquarium debris to prevent filter damageSimple 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.andnbsp;Sponge SizeAquarium SizeSurface area of sponge (Sq. In)Filter-Max I2" x 2-3/4"Up to 20 gallons30.6Filter-Max II4" x 2-3/4"Up to 40 gallons49.4Filter-Max III4" x 2-3/4"Over 40 gallons49.4 Reticulated filter foam for higher flow rates.Please click on "More Information" for instructions.

Easy-to-install aquarium pre-filter for added mechanical filtrationAttach Filter-Max to powerhead or aquariums filter intake tubeFoam sponge filter traps aquarium debris to prevent filter damageSimple 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.andnbsp;Sponge SizeAquarium SizeSurface area of sponge (Sq. In)Filter-Max I2" x 2-3/4"Up to 20 gallons30.6Filter-Max II4" x 2-3/4"Up to 40 gallons49.4Filter-Max III4" x 2-3/4"Over 40 gallons49.4 Reticulated filter foam for higher flow rates.Please click on "More Information" for instructions.

Easy-to-install aquarium pre-filter for added mechanical filtrationAttach Filter-Max to powerhead or aquariums filter intake tubeFoam sponge filter traps aquarium debris to prevent filter damageSimple 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.andnbsp;Sponge SizeAquarium SizeSurface area of sponge (Sq. In)Filter-Max I2" x 2-3/4"Up to 20 gallons30.6Filter-Max II4" x 2-3/4"Up to 40 gallons49.4Filter-Max III4" x 2-3/4"Over 40 gallons49.4 Reticulated filter foam for higher flow rates.Please click on "More Information" for instructions.

Great for increasing oxygenation and circulationIdeal for deep gravel beds and undergravel filtersPerfect for small aquariums and turtle or amphibian tanksHelps your undergravel filter stay cleaner and operate more efficiently. This kit converts any Penguin Powerhead to reverse flow. Allows filtered, oxygen-rich water to be pumped down through your lift tube and underneath the undergravel filter plate. Bacteria are encouraged to grow from the bottom up, where it's less likely to be disturbed, while debris in the gravel are pushed into the tank where your filter can remove it. Also great as a pre-filter on a powerhead used for circulation. Only for use with Penguin Powerheads, not included.Please click on "More Information" for installation and maintenance.Sponge Pre-filter Kit Contains:-->Pre-filter Core and Adapter replaces standard power head strainer to adapt to pre-filter sponge.-->Replacement Pre-Filter Sponge for the Penguin Powerhead Reverse Flow Filter Kit. Open cell Sponge Pre-filter traps more dirt, protects against impeller damage, and prevents heavy waste buildup in gravel bed and its reusable.1/2" Straight Barbed Adapter connects to 1/2" tubing to create dramatic waterfall effects.Air Inlet Plug protects fish and helps ensure 100 percent reverse flow.Reverse Flow Elbow fits virtually all-larger diameter undergravel filter lift tubes.-->Installation:If you are converting a powerhead you are currently using, unplug and remove the unit and carefully clean. Remove all parts except the motor housing, impeller assembly, and impeller housing.Slide the Sponge Pre-filter over the core as far as possible. Core and Sponge slide onto the bottom of the impeller housing. The Reverse Flow Elbow slides over the outlet and the Air Inlet Plug is installed. Failure to use the Air Inlet Plug can cause water to be forced vertically out the air inlet when backpressure is present.Installing the Powerhead back in the aquarium: The converted Penguin Reverse Flow Powerhead is in

Great for increasing oxygenation and circulationIdeal for deep gravel beds and undergravel filtersPerfect for small aquariums and turtle or amphibian tanksHelps your undergravel filter stay cleaner and operate more efficiently. This kit converts any Penguin Powerhead to reverse flow. Allows filtered, oxygen-rich water to be pumped down through your lift tube and underneath the undergravel filter plate. Bacteria are encouraged to grow from the bottom up, where it's less likely to be disturbed, while debris in the gravel are pushed into the tank where your filter can remove it. Also great as a pre-filter on a powerhead used for circulation. Only for use with Penguin Powerheads, not included.Please click on "More Information" for installation and maintenance.Sponge Pre-filter Kit Contains:-->Pre-filter Core and Adapter replaces standard power head strainer to adapt to pre-filter sponge.-->Replacement Pre-Filter Sponge for the Penguin Powerhead Reverse Flow Filter Kit. Open cell Sponge Pre-filter traps more dirt, protects against impeller damage, and prevents heavy waste buildup in gravel bed and its reusable.1/2" Straight Barbed Adapter connects to 1/2" tubing to create dramatic waterfall effects.Air Inlet Plug protects fish and helps ensure 100 percent reverse flow.Reverse Flow Elbow fits virtually all-larger diameter undergravel filter lift tubes.-->Installation:If you are converting a powerhead you are currently using, unplug and remove the unit and carefully clean. Remove all parts except the motor housing, impeller assembly, and impeller housing.Slide the Sponge Pre-filter over the core as far as possible. Core and Sponge slide onto the bottom of the impeller housing. The Reverse Flow Elbow slides over the outlet and the Air Inlet Plug is installed. Failure to use the Air Inlet Plug can cause water to be forced vertically out the air inlet when backpressure is present.Installing the Powerhead back in the aquarium: The converted Penguin Reverse Flow Powerhead is in

This Prefilter material traps debris and large particulate matter in aquarium water before it goes on to be biologically and chemically filtered.