Black Friday Price-Drop Guarantee: Nov 1st to Dec 4th. Click here  to learn more!

Filters

Items 1 to 48 of 210 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.
  • Pro Clear Aquatic Systems Frag Fuge Reef Sump - 26"
    • First reef sump to include coral frag section
    • Eurobrace includes notches for holding wires & dosing tubes
    • Probe holder holds up to 3 probes firmly with nylon screws
    • Auxilary backup drain for use with Herbie style overflow systems
    • Adjustable flow-gate to customize flow through frag section

    Regular Price: USD 349.99

    Sale Price USD 299.99

    Regular Price: USD 349.99

    Sale Price USD 299.99

  • Pro Clear Aquatic Systems Freedom Reef Sump 400 - 45"
    • Quiet, sturdy, easy to maintain saltwater filtration system
    • The Eurobrace around the rim of the sump prevents bowing
    • Notches for holding wires, dosing tubes & return pump tubing
    • Adjustable flow-gate through the media container section
    • Bubble diffuser tubes help silence bubbles as water enters

    Regular Price: USD 348.88

    Sale Price USD 299.99

    Regular Price: USD 348.88

    Sale Price USD 299.99

    Out of stock

  • Fluval FX High Performance Canister Filters
    • Powerful canister filter has a 450 gph flow rate on 30 watts
    • Smart Pump Technology (SPT) ensures optimal performance
    • Includes all the media required for highly effective filtration
    • This mega capacity filter holds 3.9 L (1 gal) of filter media
    • Suitable for freshwater or marine aquariums up to 250 gal

    Price From: USD 279.99

    Price From: USD 279.99

  • Marineland Emperor Bio-Wheel Power Filters
    Emperor Filter Systems are advanced aquarium technology at its finest. With a revolutionary two-pump design, flow and filtration efficiencies of the Emperor's are unmatched by other filters in their class.

    Price From: USD 54.99

    Price From: USD 54.99

  • Pro Clear Aquatic Systems Freedom Reef Sump 300 - 37"
    • Quiet, sturdy, easy to maintain saltwater filtration system
    • The Eurobrace around the rim of the sump prevents bowing
    • Notches for holding wires, dosing tubes & return pump tubing
    • Adjustable flow-gate through the media container section
    • Bubble diffuser tubes help silence bubbles as water enters

    Regular Price: USD 298.88

    Sale Price USD 249.99

    Regular Price: USD 298.88

    Sale Price USD 249.99

  • Pro Clear Aquatic Systems Freedom Reef Sump 200 - 32"
    • Quiet, sturdy, easy to maintain saltwater filtration system
    • The Eurobrace around the rim of the sump prevents bowing
    • Notches for holding wires, dosing tubes & return pump tubing
    • Adjustable flow-gate through the media container section
    • Bubble diffuser tubes help silence bubbles as water enters

    Regular Price: USD 248.88

    Sale Price USD 219.99

    Regular Price: USD 248.88

    Sale Price USD 219.99

  • Seapora Nano Power Filter
    • Creates a clean & clear aquatic environment
    • Sponge media blocks are efficient & reusable
    • Maintenance is simple with just a quick rinse
    • Created with a durable hang-on filter design
    • For up to 7.5 gal tanks & desktop aquariums

    Regular Price: USD 12.49

    Sale Price USD 9.99

    Regular Price: USD 12.49

    Sale Price USD 9.99

  • Xaqua InOut Complete Overflow System
    • Complete easy-to-install drainage and return system
    • Mounted externally with no impact on tank volume
    • Rates for a maximum pump capacity of 660 gallons per hour
    • Hydrodynamic Pulsing feature reduces noise and creates waves
    • No moving parts and no additional fittings required

    Regular Price: USD 67.49

    Sale Price USD 56.99

    Regular Price: USD 67.49

    Sale Price USD 56.99

  • Tetra Whisper Power Filter - 20
    • Has 3-way Mechanical, Biological and Chemical filtration
    • Ideal for freshwater aquariums up to 20 gal (105 GPH)
    • Provides silent, long- lasting and reliable performance
    • High quality magnetic impeller is the only moving part!
    • Built-in flow control knob for slow rates during feeding

    Regular Price: USD 18.99

    Sale Price USD 13.99

    Regular Price: USD 18.99

    Sale Price USD 13.99

  • Tetra Whisper Power Filter - 30
    • Has 3-way Mechanical, Biological and Chemical filtration
    • Ideal for freshwater aquariums up to 30 gal (145 GPH)
    • Provides silent, long- lasting and reliable performance
    • High quality magnetic impeller is the only moving part!
    • Built-in flow control knob for slow rates during feeding

    Regular Price: USD 22.99

    Sale Price USD 16.99

    Regular Price: USD 22.99

    Sale Price USD 16.99

  • Tetra Whisper Power Filter - 40
    • Has 3-way Mechanical, Biological and Chemical filtration
    • Ideal for freshwater aquariums up to 40 gal (210 GPH)
    • Provides silent, long- lasting and reliable performance
    • High quality magnetic impeller is the only moving part!
    • Built-in flow control knob for slow rates during feeding

    Regular Price: USD 26.99

    Sale Price USD 19.99

    Regular Price: USD 26.99

    Sale Price USD 19.99

  • Tetra Whisper Power Filter - 60
    • Has 3-way Mechanical, Biological and Chemical filtration
    • Ideal for freshwater aquariums up to 60 gal (330 GPH)
    • Provides silent, long- lasting and reliable performance
    • High quality magnetic impeller is the only moving part!
    • Built-in flow control knob for slow rates during feeding

    Regular Price: USD 37.99

    Sale Price USD 27.99

    Regular Price: USD 37.99

    Sale Price USD 27.99

  • Seachem Tidal Power Filter 110
    • Upper most blue pegged integrated maintenance alert feature
    • Integrated self priming pump; thus no priming is required
    • Features a high capacity 3.2 L filter basket for optimal filtration
    • This super silent model is ideal for up to 110 gallon aquariums
    • Includes adjustable upper flow rate and lower intake knobs
    USD 82.00
    USD 82.00
  • Seachem Tidal Power Filter 55
    • Upper most blue pegged integrated maintenance alert feature
    • Integrated self priming pump; thus no priming is required
    • Features a high capacity 1.2 L filter basket for optimal filtration
    • This super silent model is ideal for up to 55 gallon aquariums
    • Includes adjustable upper flow rate and lower intake knobs
    USD 54.00
    USD 54.00
  • Seachem Tidal Power Filter 75
    • Upper most blue pegged integrated maintenance alert feature
    • Integrated self priming pump; thus no priming is required
    • Features a high capacity 1.9 L filter basket for optimal filtration
    • This super silent model is ideal for up to 75 gallon aquariums
    • Includes adjustable upper flow rate and lower intake knobs
    USD 68.00
    USD 68.00
  • Pro Clear Aquatic Systems Freedom 4-in-1 Sump 100 - 16" (Cube)
    • Quiet, sturdy, easy to maintain saltwater filtration system
    • The Eurobrace around the rim of the sump prevents bowing
    • Notches for holding wires, dosing tubes & return pump tubing
    • Refugium can also be converted to a wet/dry trickle filter
    • Adjustable flow-gate through refugium section of the sump

    Regular Price: USD 298.88

    Sale Price USD 249.99

    Regular Price: USD 298.88

    Sale Price USD 249.99

  • Pro Clear Aquatic Systems Freedom 4-in-1 Sump 200 - 32"
    • Quiet, sturdy, easy to maintain saltwater filtration system
    • The Eurobrace around the rim of the sump prevents bowing
    • Notches for holding wires, dosing tubes & return pump tubing
    • Refugium can also be converted to a wet/dry trickle filter
    • Adjustable flow-gate through refugium section of the sump

    Regular Price: USD 348.88

    Sale Price USD 299.99

    Regular Price: USD 348.88

    Sale Price USD 299.99

  • Pro Clear Aquatic Systems Freedom 4-in-1 Sump 300 - 37"
    • Quiet, sturdy, easy to maintain saltwater filtration system
    • The Eurobrace around the rim of the sump prevents bowing
    • Notches for holding wires, dosing tubes & return pump tubing
    • Refugium can also be converted to a wet/dry trickle filter
    • Adjustable flow-gate through refugium section of the sump

    Regular Price: USD 398.88

    Sale Price USD 349.99

    Regular Price: USD 398.88

    Sale Price USD 349.99

  • Pro Clear Aquatic Systems Freedom 4-in-1 Sump 400 - 45"
    • Quiet, sturdy, easy to maintain saltwater filtration system
    • The Eurobrace around the rim of the sump prevents bowing
    • Notches for holding wires, dosing tubes & return pump tubing
    • Refugium can also be converted to a wet/dry trickle filter
    • Adjustable flow-gate through refugium section of the sump

    Regular Price: USD 448.88

    Sale Price USD 399.99

    Regular Price: USD 448.88

    Sale Price USD 399.99

  • Pro Clear Aquatic Systems Freedom Reef Sump 100 - 24"
    • Quiet, sturdy, easy to maintain saltwater filtration system
    • The Eurobrace around the rim of the sump prevents bowing
    • Notches for holding wires, dosing tubes & return pump tubing
    • Adjustable flow-gate through the media container section
    • Bubble diffuser tubes help silence bubbles as water enters

    Regular Price: USD 198.88

    Sale Price USD 169.99

    Regular Price: USD 198.88

    Sale Price USD 169.99

  • Seachem Tidal Power Filters
    • Upper most blue pegged integrated maintenance alert feature
    • Integrated self priming pump; thus no priming is required
    • Features a high capacity 1.2 L filter basket for optimal filtration
    • This super silent model is ideal for up to 55 gallon aquariums
    • Includes adjustable upper flow rate and lower intake knobs

    Price From: USD 54.00

    Price From: USD 54.00

  • Lee's Original Undergravel Filters
    Designed with adjustable 1" diameter uplift tubes for better water circulation and multiple-plate construction for easy installation. Advanced design allows a separate plate installation and also has optional flow-thru set-up for use with a power head.

    Price From: USD 9.99

    Price From: USD 9.99

  • Lee's Under Gravel Filter - 40/55 gal
    • Turn your gravel bed into a biological filter
    • Includes plates, airline tubing & uplift tubes
    • Includes air diffusers and carbon cartridges
    • Adjustable 1" uplift tubes for a better flow
    • This Filter could be used with a Powerhead

    Regular Price: USD 21.99

    Sale Price USD 18.99

    Regular Price: USD 21.99

    Sale Price USD 18.99

  • Seapora Biopellet Reactors

    Price From: USD 94.99

    Price From: USD 94.99

  • Seapora Media Reactor - Standard
    • Provides powerful supplementary filtration
    • Utilizes the media of your personal choice
    • 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 106.49

    Sale Price USD 89.99

    Regular Price: USD 106.49

    Sale Price USD 89.99

  • Seapora Media Reactor - Large
    • Provides powerful supplementary filtration
    • Utilizes the media of your personal choice
    • 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 150.49

    Sale Price USD 120.99

    Regular Price: USD 150.49

    Sale Price USD 120.99

  • Seapora Media Reactor E Series - Standard
    • Provides powerful supplementary filtration
    • Utilizes the media of your personal choice
    • Versatile build functions in line or in sump
    • Simple to clean, with an easy unlock top
    • Built to last forever, with a sturdy make

    Regular Price: USD 71.99

    Sale Price USD 59.99

    Regular Price: USD 71.99

    Sale Price USD 59.99

  • Seapora Media Reactor E Series - Large
    • Provides powerful supplementary filtration
    • Utilizes the media of your personal choice
    • Versatile build functions in line or in sump
    • Simple to clean, with an easy unlock top
    • Built to last forever, with a sturdy make

    Regular Price: USD 85.49

    Sale Price USD 74.99

    Regular Price: USD 85.49

    Sale Price USD 74.99

  • Seapora Nitrate Reactor - Standard
    • 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 158.99

    Sale Price USD 139.99

    Regular Price: USD 158.99

    Sale Price USD 139.99

  • Eheim Heat Coil for Pro 3 Canister Thermofilter
    Description Coming Soon!

    Regular Price: USD 119.99

    Sale Price USD 89.99

    Regular Price: USD 119.99

    Sale Price USD 89.99

  • Coralife Marine Filter with Protein Skimmer - 30 gal
    Description Coming Soon!

    Regular Price: USD 49.99

    Sale Price USD 34.99

    Regular Price: USD 49.99

    Sale Price USD 34.99

  • Seapora Power Filter PF10
    • Power filter with a hang-on-tank design
    • Thorough multi-stage filtration system
    • Packaged with a reusable Bio-Sponge
    • Disposable Carbon Cartridge included
    • Simple to maintain and easy to restock
    USD 14.99
    USD 14.99
  • Seapora Power Filter PF30
    • Power filter with a hang-on-tank design
    • Thorough multi-stage filtration system
    • Packaged with reusable Bio-Sponges
    • Disposable Carbon Cartridges included
    • Simple to maintain and easy to restock
    USD 24.99
    USD 24.99
  • Seapora Power Filter PF55
    • Power filter with a hang-on-tank design
    • Thorough multi-stage filtration system
    • Packaged with a reusable Bio-Sponge
    • Disposable Carbon Cartridge included
    • Simple to maintain and easy to restock
    USD 39.99
    USD 39.99
  • Aqueon QuietFlow Canister Filter - 200
    • Designed for use with both freshwater and saltwater tanks
    • Preloaded with biological, chemical, and mechanical media
    • Includes a convenient back-hanging water polishing unit
    • Easy to replace carbon cartridges save you time and trouble
    • Can be modified for a more traditional water return method
    USD 84.99
    USD 84.99
  • Aqueon QuietFlow Canister Filter - 300
    • Designed for use with both freshwater and saltwater tanks
    • Preloaded with biological, chemical, and mechanical media
    • Includes a convenient back-hanging water polishing unit
    • Easy to replace carbon cartridges save you time and trouble
    • Can be modified for a more traditional water return method
    USD 114.99
    USD 114.99
  • Aqueon QuietFlow Canister Filter - 400
    • Designed for use with both freshwater and saltwater tanks
    • Preloaded with biological, chemical, and mechanical media
    • Includes a convenient back-hanging water polishing unit
    • Easy to replace carbon cartridges save you time and trouble
    • Can be modified for a more traditional water return method
    USD 134.99
    USD 134.99
  • Eheim Classic Canister Filter with Media - 2217
    • Recommended for tanks up to 160 gallon
    • The flow rate is 264 GPH
    • Inlet 16/22mm and Outlet 12/16mm
    • Simple and efficient canister filter design
    • Includes all media, hoses and accessories required for start up

    Regular Price: USD 169.99

    Sale Price USD 149.99

    Regular Price: USD 169.99

    Sale Price USD 149.99

  • Seapora Biopellet Reactor Alpha-2
    • 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 150.49

    Sale Price USD 129.99

    Regular Price: USD 150.49

    Sale Price USD 129.99

  • 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 106.99

    Sale Price USD 94.99

    Regular Price: USD 106.99

    Sale Price USD 94.99

  • Seapora Media Reactors E Series

    Price From: USD 59.99

    Price From: USD 59.99

  • Seapora Media Reactors

    Price From: USD 89.99

    Price From: USD 89.99

  • Seapora Nitrate Reactors

    Price From: USD 139.99

    Price From: USD 139.99

  • Seapora Nano Power Filter
    • Power filter with a hang-on-tank design
    • Thorough multi-stage filtration system
    • Packaged with a reusable Bio-Sponge
    • Disposable Carbon Cartridge included
    • Simple to maintain and easy to restock

    Price From: USD 9.99

    Price From: USD 9.99

  • Price From: USD 24.99

  • Aqueon QuietFlow Canister Filters

    Price From: USD 84.99

    Price From: USD 84.99

  • Cobalt Aquatics Clearvue Mini Internal Filter - 20
    Description Coming Soon!
    USD 24.99
    USD 24.99
  • Cobalt Aquatics Clearvue Mini Internal Filter - 30
    Description Coming Soon!
    USD 29.99
    USD 29.99
Page:
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5