Filters

Items 97 to 144 of 199 total

Despite having over 100 filters for sale, Big Al’s Pets make it easy to find the perfect match for your aquarium. Our aquarium filters are easily sorted into categories so you can provide your fish with the best filtration system for their needs. You’ll find everything from power filters to canister filters to modular filters on our site. Plus, we carry under-gravel filters, sponge filters, sump filters, and fluidized bed filters to accommodate any application or setup. Each one provides high-quality filtration to ensure the best water quality and clarity for your fish.

When choosing an aquarium filter, make sure you take into account the many factors which can affect filter performance. The size of your tank is a major determining factor in the type of filter that you require. For example, some larger tanks employ multiple filters to achieve the best water conditions. You’ll also need to consider other factors, such as how many and what types of fish you have in your aquarium. Take a closer look at our amazing selection of aquarium filters, and you’re sure to find one that meets your specific needs.
  • External Canister Filter - 306
    • Enhanced filtration - Reduced maintenance frequency - Quieter operation
    • Patented Aqua-Stop valves for easy hose disconnection
    • Re-engineered priming system for easier starting
    • Removable filter baskets include necessary media
    • Creates the cleanest, clearest, healthiest aquariums!
    USD 169.99
    USD 169.99
  • External Canister Filter - 206
    • Enhanced filtration - Reduced maintenance frequency - Quieter operation
    • Patented Aqua-Stop valves for easy hose disconnection
    • Re-engineered priming system for easier starting
    • Removable filter baskets include necessary media
    • Creates the cleanest, clearest, healthiest aquariums!
    USD 119.99
    USD 119.99
  • External Canister Filter - 106
    • Enhanced filtration - Reduced maintenance frequency - Quieter operation
    • Patented Aqua-Stop valves for easy hose disconnection
    • Re-engineered priming system for easier starting
    • Removable filter baskets include necessary media
    • Creates the cleanest, clearest, healthiest aquariums!
    USD 109.99
    USD 109.99
  • Two Little Fishies Phosban Reactor - 550
    Phosban Reactors were designed with the uplflow principle to achieve the most effecient use of PhosBan or other chemical filter media. They force even distribution of water through the media, and prevent channeling.
    USD 85.14
    USD 85.14
  • Two Little Fishies Phosban Reactor - 150
    Phosban Reactors were designed with the uplflow principle to achieve the most effecient use of PhosBan or other chemical filter media. They force even distribution of water through the media, and prevent channeling.
    USD 52.73
    USD 52.73
  • Tom Aquatics Dive Clean Mini Internal Filter
    Powerful mini submersible filter that is ideal for Nano tanks and other small aquariums, as well as for use in reptile tanks. Energy saving compact motor runs on a low 12 Volt power supply for safe operation in water. For freshwater or marine use.

    Regular Price: USD 19.99

    Sale Price USD 13.99

    Regular Price: USD 19.99

    Sale Price USD 13.99

  • Tom Aquatics Pre-Filter for Aqua Lifter
    • Suction pre-filter captures free-floating debris
    • Prevents detritus accumulation in your Aqua-Lifter pump
    • Helps ensure optimal pump performance
    • Transparent casing shows when insert requires replacement
    • Installs with standard airline tubing

    Regular Price: USD 4.99

    Sale Price USD 3.49

    Regular Price: USD 4.99

    Sale Price USD 3.49

    Out of stock

  • Fluval FX6 High Performance Canister Filter
    • Ultra powerful canister filter boasts a 563 gph flow rate!
    • Smart Pump Technology (SPT) ensures optimal performance
    • Includes all media required for highly effective filtration
    • Mega capacity filter holds 5.9 L of filter media
    • Integrated dials remind you when maintenance is required
    USD 339.99
    USD 339.99
  • E-X-T Aquarium Canister Filter
    • Powerful 4-stage canister filter for aquariums up to 55 gallons
    • Driven by a 210 gph in-line pump instead of a bulky motorhead
    • Includes four large media trays pre-loaded with premium media
    • Perform canister maintenance without stopping water circulation!
    • Ideal for freshwater, saltwater, reef, and terrarium applications
    USD 131.99
    USD 131.99
  • API SuperClean 10 Internal Power Filter
    • Compact internal power filter for aquariums up to 10 gallons
    • Includes Crystal Bio-Chem Zorb cartridge for superior filtration
    • Quickly eliminates unwanted debris, discoloration, and odors
    • Brilliant design enables effortless installation and maintenance
    • Suitable for use in both freshwater and saltwater aquariums

    Regular Price: USD 13.19

    Sale Price USD 9.99

    Regular Price: USD 13.19

    Sale Price USD 9.99

  • Trigger Systems Emerald Sump - 39"
    • Premium quality sump made with rounded, flame-polished acrylic
    • Includes a full top support brace for added sturdiness and durability
    • Features dedicated skimmer, refugium, and return sections
    • Includes 100 micron filter socks to provide effective fine filtration
    • Emerald coloring blocks light to prevent unwanted algae growth
    USD 524.99
    USD 524.99

    Out of stock

  • Trigger Systems Emerald Sump - 34"
    • Premium quality sump made with rounded, flame-polished acrylic
    • Includes a full top support brace for added sturdiness and durability
    • Features dedicated skimmer, refugium, and return sections
    • Includes 100 micron filter socks to provide effective fine filtration
    • Emerald coloring blocks light to prevent unwanted algae growth
    USD 429.99
    USD 429.99

    Out of stock

  • Trigger Systems Emerald Sump - 26"
    • Premium quality sump made with rounded, flame-polished acrylic
    • Includes a full top support brace for added sturdiness and durability
    • Features dedicated skimmer, refugium, and return sections
    • Includes 100 micron filter sock to provide effective fine filtration
    • Emerald coloring blocks light to prevent unwanted algae growth
    USD 324.99
    USD 324.99

    Out of stock

  • Trigger Systems Ruby Cube Sump - 20"
    • Premium quality sump made with rounded, flame-polished acrylic
    • Includes a full top support brace for added sturdiness and durability
    • Features dedicated skimmer, refugium, and return sections
    • Includes 100 micron filter sock to provide effective fine filtration
    • Ruby red coloring blocks light to prevent unwanted algae growth
    USD 344.99
    USD 344.99
  • Trigger Systems Ruby Elite Sump - 36"
    • Premium quality sump made with rounded, flame-polished acrylic
    • Includes a full top support brace for added sturdiness and durability
    • Features dedicated skimmer, refugium, and return sections
    • Includes 100 micron filter socks to provide effective fine filtration
    • Ruby red coloring blocks light to prevent unwanted algae growth
    USD 459.99
    USD 459.99

    Out of stock

  • Trigger Systems Ruby Elite Sump - 30"
    • Premium quality sump made with rounded, flame-polished acrylic
    • Includes a full top support brace for added sturdiness and durability
    • Features dedicated skimmer, refugium, and return sections
    • Includes 100 micron filter socks to provide effective fine filtration
    • Ruby red coloring blocks light to prevent unwanted algae growth
    USD 414.99
    USD 414.99
  • Trigger Systems Ruby Sump - 36"
    • Premium quality sump made with rounded, flame-polished acrylic
    • Includes a full top support brace for added sturdiness and durability
    • Features dedicated skimmer, refugium, and return sections
    • Includes 100 micron filter socks to provide effective fine filtration
    • Ruby red coloring blocks light to prevent unwanted algae growth
    USD 354.99
    USD 354.99
  • Trigger Systems Ruby Sump - 30"
    • Premium quality sump made with rounded, flame-polished acrylic
    • Includes a full top support brace for added sturdiness and durability
    • Features dedicated skimmer, refugium, and return sections
    • Includes 100 micron filter socks to provide effective fine filtration
    • Ruby red coloring blocks light to prevent unwanted algae growth
    USD 324.99
    USD 324.99

    Out of stock

  • Trigger Systems Crystal Cube Sump - 18"
    • Premium quality sump made with rounded, flame-polished acrylic
    • Includes a full top support brace for added sturdiness and durability
    • Features dedicated skimmer, refugium, and return sections
    • Includes 100 micron filter sock to provide effective fine filtration
    USD 264.99
    USD 264.99
  • Trigger Systems Crystal Elite Sump - 36"
    • Premium quality sump made with rounded, flame-polished acrylic
    • Includes a full top support brace for added sturdiness and durability
    • Features dedicated skimmer, refugium, and return sections
    • Includes 100 micron filter socks to provide effective fine filtration
    • Allows for separate water flow through refugium section
    USD 359.99
    USD 359.99
  • Trigger Systems Crystal Elite Sump - 30"
    • Premium quality sump made with rounded, flame-polished acrylic
    • Includes a full top support brace for added sturdiness and durability
    • Features dedicated skimmer, refugium, and return sections
    • Includes 100 micron filter socks to provide effective fine filtration
    • Allows for separate water flow through refugium section
    USD 294.99
    USD 294.99
  • Trigger Systems Crystal Sump - 36"
    • Premium quality sump made with rounded, flame-polished acrylic
    • Includes a full top support brace for added sturdiness and durability
    • Features dedicated skimmer, refugium, and return sections
    • Includes 100 micron filter socks to provide effective fine filtration
    • Can be used as a berlin style sump or as a refugium sump
    USD 319.99
    USD 319.99
  • Trigger Systems Crystal Sump - 30"
    • Premium quality sump made with rounded, flame-polished acrylic
    • Includes a full top support brace for added sturdiness and durability
    • Features dedicated skimmer, refugium, and return sections
    • Includes 100 micron filter sock to provide effective fine filtration
    • Can be used as a berlin style sump or as a refugium sump
    USD 249.99
    USD 249.99

    Out of stock

  • Seapora Breeder Sponge Filter - 136
    Designed for use with an air pump or powerhead, the Seapora Breeder Sponge Filter provides both mechanical and biological filtration. It is simple to assemble and features a weighted base for stability.

    Regular Price: USD 9.99

    Sale Price USD 6.99

    Regular Price: USD 9.99

    Sale Price USD 6.99

  • Seapora Breeder Sponge Filter - 60
    Designed for use with an air pump or powerhead, the Seapora Breeder Sponge Filter provides both mechanical and biological filtration. It is simple to assemble and features a weighted base for stability.

    Regular Price: USD 8.99

    Sale Price USD 5.99

    Regular Price: USD 8.99

    Sale Price USD 5.99

  • Seapora Breeder Sponge Filter - 30
    Designed for use with an air pump or powerhead, the Seapora Breeder Sponge Filter provides both mechanical and biological filtration. It is simple to assemble and features a weighted base for stability.

    Regular Price: USD 7.99

    Sale Price USD 4.49

    Regular Price: USD 7.99

    Sale Price USD 4.49

  • Hagen Aquaclear Power Filter - 70
    The AquaClear Power Filters provide mechanical, chemical and biological filtration through their multi-stage filtration system. Filtration volume is up to 7 times larger than comparable Filters. Installation and maintenance are quick, easy and convenient.
    USD 49.99
    USD 49.99
  • Aquaclear Power Filter - 50
    The AquaClear Power Filters provide mechanical, chemical and biological filtration through their multi-stage filtration system. Filtration volume is up to 7 times larger than comparable Filters. Installation and maintenance are quick, easy and convenient.
    USD 37.99
    USD 37.99
  • Hagen Aquaclear Power Filter - 30
    The AquaClear Power Filters provide mechanical, chemical and biological filtration through their multi-stage filtration system. Filtration volume is up to 7 times larger than comparable Filters. Installation and maintenance are quick, easy and convenient.
    USD 32.99
    USD 32.99
  • Hagen Aquaclear Power Filter - 20
    The AquaClear Power Filters provide mechanical, chemical and biological filtration through their multi-stage filtration system. Filtration volume is up to 7 times larger than comparable Filters. Installation and maintenance are quick, easy and convenient.
    USD 25.99
    USD 25.99
  • Eheim Surface Skimmer
    Use on the intake side of your canister filter. Quietly removes surface sludge and protein build-up. This product can hook up to any canister filter with a flow rate up to 200 gph.

    Regular Price: USD 69.99

    Sale Price USD 59.99

    Regular Price: USD 69.99

    Sale Price USD 59.99

  • Eheim Pro 3e Canister Filter - 2078
    The PRO 3e is the world's first microprocessor controlled aquarium filter. Easily monitor and control the output of the filter to ensure optimum performance and results. New - Bio-Stream function for varying flow patterns!

    Regular Price: USD 499.99

    Sale Price USD 399.99

    Regular Price: USD 499.99

    Sale Price USD 399.99

  • Eheim Pro 3e Canister Filter - 2076
    The PRO 3e is the world's first microprocessor controlled aquarium filter. Easily monitor and control the output of the filter to ensure optimum performance and results. New - Bio-Stream function for varying flow patterns! (Professionel 3e 450)

    Regular Price: USD 459.99

    Sale Price USD 349.99

    Regular Price: USD 459.99

    Sale Price USD 349.99

  • Eheim Pro 3 Thermofilter - 2180
    Eheim 2180 Thermofilter comes with a stainless steel heater built right into the bottom of the filter! This filter will ensure even heating and effective filtration of your aquarium water with no unsightly sumbersible heaters needed. Media not Included.

    Regular Price: USD 599.99

    Sale Price USD 449.99

    Regular Price: USD 599.99

    Sale Price USD 449.99

  • Eheim Pro 3 2080 Canister Filter
    This filter system is filled with the convenient priming support at "the push of a button" and immediately the system starts working. Thanks to the easy-to-use filter baskets, cleaning or replacement of the filter media is much easier.

    Regular Price: USD 499.99

    Sale Price USD 399.99

    Regular Price: USD 499.99

    Sale Price USD 399.99

    Out of stock

  • Eheim Ecco Comfort Canister Filter - 2236
    • Recommended for tanks up to 80 gallons
    • Has a flow rate of 185 GPH
    • Inlet 12/16mm Outlet 12/16mm
    • Is completely user friendly
    • Has media, hoses & accessories needed for start up

    Regular Price: USD 149.99

    Sale Price USD 119.99

    Regular Price: USD 149.99

    Sale Price USD 119.99

    Out of stock

  • Eheim Ecco Comfort Canister Filter - 2234
    • Recommended for tanks up to 60 gallons
    • Has a flow rate of 145 GPH
    • Inlet 12/16mm Outlet 12/16mm
    • Is completely user friendly
    • Has media, hoses & accessories needed for start up

    Regular Price: USD 199.99

    Sale Price USD 99.99

    Regular Price: USD 199.99

    Sale Price USD 99.99

  • Eheim Ecco Comfort Canister Filter - 2232
    • Recommended for tanks up to 35 gallons
    • Has a flow rate of 127 GPH
    • Inlet 12/16mm Outlet 12/16mm
    • Is completely user friendly
    • Has media, hoses & accessories needed for start up

    Regular Price: USD 109.99

    Sale Price USD 89.99

    Regular Price: USD 109.99

    Sale Price USD 89.99

    Out of stock

  • Aqueon ProFlex Hang-On Overflow Box - 220
    The Aqueon ProFlex Hang-On Overflows are for use in aquariums that would benefit from sump filtration, but lack pre-drilled holes for sump intake and return. Available in models suitable for aquariums up to 400 gallons in size.

    Regular Price: USD 99.99

    Sale Price USD 79.99

    Regular Price: USD 99.99

    Sale Price USD 79.99

  • Hagen Aquaclear Power Filter - 110
    The AquaClear Power Filters provide mechanical, chemical and biological filtration through their multi-stage filtration system. Filtration volume is up to 7 times larger than comparable Filters. Installation and maintenance are quick, easy and convenient.
    USD 79.99
    USD 79.99
  • Fluval Surface Skimmer
    The Fluval aquarium surface skimmer draws water from the surface of the aquarium eliminating undesirable surface films.

    Regular Price: USD 15.99

    Sale Price USD 9.99

    Regular Price: USD 15.99

    Sale Price USD 9.99

    Out of stock

  • Fluval Underwater Filter - U1
    The new Fluval underwater filter with three stage filtration is ideal for use in fresh, marine or reptile environments. Offers a Flip-Top for quick and easy maintenance and an adjustable 3 way flow for output flexibility.

    Regular Price: USD 32.99

    Sale Price USD 26.99

    Regular Price: USD 32.99

    Sale Price USD 26.99

  • Quick-Draw Corner Aquarium Filter
    Small corner filter ideal for small tanks or fry tanks. Includes: air stone, water outlet tube, 5 feet of high quality kink resistant airline tubing, activated carbon and filter floss. All thats needed is an air pump.

    Regular Price: USD 9.99

    Sale Price USD 5.99

    Regular Price: USD 9.99

    Sale Price USD 5.99

  • Penn Plax Cascade 170 Internal Filter
    These slim, easy to maintain internal filters provide great Physical, Chemical and Biological filtration for any Marine or Tropical aquarium. Comes with a directional flow spout, completely submersible motor with aeration control and an air filter.

    Regular Price: USD 13.99

    Sale Price USD 7.99

    Regular Price: USD 13.99

    Sale Price USD 7.99

  • API Filstar Canister Filter - XP-XL
    • Recommended for aquariums up to 265 gallons
    • Powerful 450 gph flow rate
    • Self-priming system for easy start-up
    • Designed for bypass-free water circulation
    • Includes all media, hoses, and accessories

    Regular Price: USD 199.99

    Sale Price USD 189.99

    Regular Price: USD 199.99

    Sale Price USD 189.99

  • API Filstar Canister Filter - XP-L
    • Recommended for aquariums up to 175 gallons
    • Powerful 350 gph flow rate
    • Self-priming system for easy start-up
    • Designed for bypass-free water circulation
    • Includes all media, hoses, and accessories

    Regular Price: USD 149.99

    Sale Price USD 139.99

    Regular Price: USD 149.99

    Sale Price USD 139.99

  • API Filstar Canister Filter - XP-M
    • Recommended for aquariums up to 75 gallons
    • Powerful 300 gph flow rate
    • Self-priming system for easy start-up
    • Designed for bypass-free water circulation
    • Includes all media, hoses, and accessories

    Regular Price: USD 124.99

    Sale Price USD 104.99

    Regular Price: USD 124.99

    Sale Price USD 104.99

  • API Filstar Canister Filter - XP-S
    • Recommended for aquariums up to 45 gallons
    • Powerful 250 gph flow rate
    • Self-priming system for easy start-up
    • Designed for bypass-free water circulation
    • Includes all media, hoses, and accessories

    Regular Price: USD 99.99

    Sale Price USD 94.99

    Regular Price: USD 99.99

    Sale Price USD 94.99

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