Filters

Items 97 to 144 of 212 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.
  • Cobalt Aquatics Clearvue Mini Internal Filter - 20
    Description Coming Soon!
    USD 27.98
    USD 27.98

    Out of stock

  • Cobalt Aquatics Clearvue Mini Internal Filter - 30
    Description Coming Soon!
    USD 34.15
    USD 34.15
  • Cobalt Aquatics Clearvue Mini Internal Filter - 45
    Description Coming Soon!
    USD 40.33
    USD 40.33
  • Trigger Systems Sapphire 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
    • Contains 100 micron filter sock to provide effective fine filtration
    • Sapphire coloring blocks light to prevent unwanted algae growth
    USD 324.99
    USD 324.99

    Out of stock

  • Eheim aquaCorner 60 Corner Internal Filter
    • A powerful corner filter for small and nano aquariums
    • Gentle suction protects your fish and other creatures
    • Minimalist design takes up very little aquarium space
    • Easily opened to perform quick and simple maintenance
    • Installs on aquariums with up to 5 mm glass thickness

    Regular Price: USD 39.99

    Sale Price USD 29.99

    Regular Price: USD 39.99

    Sale Price USD 29.99

  • Seapora Nitrate Reactor - Large
    • Helps reduce nitrate levels in aquariums
    • Utilizes Bioballs to strip nitrates out
    • Includes a powerful Sicce Syncra silent pump
    • Simple to clean, with an easy unlock top
    • Sturdy build is designed to last a lifetime

    Regular Price: USD 219.99

    Sale Price USD 189.99

    Regular Price: USD 219.99

    Sale Price USD 189.99

  • Seapora Biopellet Reactor Alpha-1
    • Provides powerful supplementary filtration
    • Specifically designed for biopellet media
    • Includes a powerful Sicce Syncra water pump
    • Simple to clean, with an easy unlock top
    • Built to last forever, with a sturdy make

    Regular Price: USD 109.99

    Sale Price USD 89.99

    Regular Price: USD 109.99

    Sale Price USD 89.99

  • Lee's Undergravel Fish Bowl Filters
    Bowl Filter allows you to maintain fish safely in a bowl or small designer aquarium for extended periods of time. Includes plant and carbon cartridge. Minimizes maintenance responsibility.

    Price From: USD 3.99

    Price From: USD 3.99

    Out of stock

  • Pro 4+ Canister Filter - 250
    • Maintains the performance and efficiency of it's predecessors
    • Still implements self-priming, prefilter, and safety adapters!
    • New Range Xtender Function lengthens time between cleanings
    • "Xtender" button helps in the event that fine filter-media clogs
    • Features a lower power consumption and an all black exterior

    Regular Price: USD 229.99

    Sale Price USD 169.99

    Regular Price: USD 229.99

    Sale Price USD 169.99

    Out of stock

  • 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

  • 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
    USD 14.33
    USD 14.33
  • 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
  • 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
  • Skim350 Micro Surface Skimmer
    • Designed for use in aquariums up to 92 gallons
    • Removes dust, oily films, and microorganisms from water's surface
    • Promotes proper gas exchange for a healthier aquarium
    • Driven by 80 gph pump with adjustable flow control
    • Self-adjusting float compensates for water evaporation

    Regular Price: USD 34.99

    Sale Price USD 24.99

    Regular Price: USD 34.99

    Sale Price USD 24.99

  • QuietFlow Internal Filter - AT40
    • Delivers highly effective 3-stage filtration
    • Ideal for aquariums and terrariums up to 40 gallons
    • Directional return pipe allows horizontal or vertical mounting
    • Easy-to-use flow rate adjuster enables precise output control
    • Includes a limited lifetime manufacturer's warranty!

    Regular Price: USD 39.99

    Sale Price USD 32.99

    Regular Price: USD 39.99

    Sale Price USD 32.99

  • QuietFlow Internal Filter - AT30
    • Delivers highly effective 3-stage filtration
    • Ideal for aquariums and terrariums up to 30 gallons
    • Directional return pipe allows horizontal or vertical mounting
    • Easy-to-use flow rate adjuster enables precise output control
    • Includes a limited lifetime manufacturer's warranty!

    Regular Price: USD 39.99

    Sale Price USD 32.99

    Regular Price: USD 39.99

    Sale Price USD 32.99

  • QuietFlow Internal Filter - AT15
    • Delivers highly effective 3-stage filtration
    • Ideal for aquariums and terrariums up to 15 gallons
    • Directional return pipe allows horizontal or vertical mounting
    • Easy-to-use flow rate adjuster enables precise output control
    • Includes a limited lifetime manufacturer's warranty!

    Regular Price: USD 27.99

    Sale Price USD 22.99

    Regular Price: USD 27.99

    Sale Price USD 22.99

  • QuietFlow Internal Filter - AT10
    • Delivers highly effective 3-stage filtration
    • Ideal for aquariums and terrariums up to 10 gallons
    • Directional return pipe allows horizontal or vertical mounting
    • Easy-to-use flow rate adjuster enables precise output control
    • Includes a limited lifetime manufacturer's warranty!

    Regular Price: USD 24.99

    Sale Price USD 19.99

    Regular Price: USD 24.99

    Sale Price USD 19.99

  • External Canister Filter - 406
    • 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 199.99
    USD 199.99
  • 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
  • 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 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 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
  • Macro External Canister Filter - 75 gal
    • External canister filter for aquatic habitats up to 75 gallons
    • Keeps water clear with 3 highly efficient stages of filtration
    • Provides a maximum flow rate of 200 gph - fully adjustable!
    • With all parts and media - no additional purchases required!
    • Designed for easy installation, operation, and maintenance

    Regular Price: USD 179.99

    Sale Price USD 119.99

    Regular Price: USD 179.99

    Sale Price USD 119.99

  • Macro External Canister Filter - 50 gal
    • External canister filter for aquatic habitats up to 50 gallons
    • Keeps water clear with 3 highly efficient stages of filtration
    • Provides a maximum flow rate of 200 gph - fully adjustable!
    • With all parts and media - no additional purchases required!
    • Designed for easy installation, operation, and maintenance

    Regular Price: USD 129.99

    Sale Price USD 79.99

    Regular Price: USD 129.99

    Sale Price USD 79.99

  • Nano External Canister Filter - 30 gal
    • External canister filter for aquatic habitats up to 30 gallons
    • Keeps water clear with 3 highly efficient stages of filtration
    • Provides a maximum flow rate of 160 gph - fully adjustable!
    • With all parts and media - no additional purchases required!
    • Designed for easy installation, operation, and maintenance

    Regular Price: USD 79.99

    Sale Price USD 59.99

    Regular Price: USD 79.99

    Sale Price USD 59.99

  • Nano External Canister Filter - 10 gal
    • External canister filter for aquatic habitats up to 10 gallons
    • Keeps water clear with 3 highly efficient stages of filtration
    • Provides a maximum flow rate of 80 gph - fully adjustable!
    • With all parts and media - no additional purchases required!
    • Designed for easy installation, operation, and maintenance

    Regular Price: USD 44.99

    Sale Price USD 34.99

    Regular Price: USD 44.99

    Sale Price USD 34.99

  • Ista Surface Skimmer
    • Eliminates surface films caused by protein and organisms
    • Improves the exchange of oxygen and penetration of light
    • Self-floating design adjusts according to the water level
    • Marine aquariums with no surface overflow benefit greatly
    • Easy to install and maintain - fits all types of canister filters

    Regular Price: USD 9.99

    Sale Price USD 5.99

    Regular Price: USD 9.99

    Sale Price USD 5.99

  • 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

    Out of stock

  • 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
  • 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

  • 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
  • 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

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