Filter Media

Items 1 to 48 of 519 total

At Big Al’s Pets, we offer the best selection of aquarium filter media, including biological, chemical, and mechanical varieties. These products are essential for ensuring effective aquarium filtration for a healthier fish habitat. Keeping up with aquarium maintenance requires much less time when you use the right filter media since these products are always actively working to create a cleaner, healthier environment for your fish. And when you shop at Big Al’s, you’ll also save time by getting all different types of media you need in one convenient place.

Our selection of aquarium filter media includes over 400 high-quality products. In addition to biological filter media, you’ll also find activated carbon, diatom media, mechanical media, and more. We also carry other accessories you need to properly filter your aquarium, such as filter media bags, replacement cartridges, deionization cartridges, reverse osmosis membranes, etc. With so many options, any fish keeper can find the exact products they need to keep their water clean and their fish happy and healthy.
  • Big Al's Filter Floss - 20 sq ft
    • Easily cut-to-fit for your filter
    • Filters out even the finest of particles
    • Great for sump or custom style filter systems
    USD 11.99
    USD 11.99
  • Marineland Filter Cartridge for Penguin 170B/200B/330B/350B - Rite-Size C - 6 pk
    Marineland Rite-Size Cartridges are designed to meet the highest standards of water purification, performance, and operational ease. Each pre-assembled cartridge slides easily into place, providing superior mechanical and chemical filtration.

    Regular Price: USD 10.49

    Special Price USD 6.99

    Regular Price: USD 10.49

    Special Price USD 6.99

  • Marineland Filter Cartridge for Emperor 280/400 - Rite-Size E - 4 pk
    Marineland designed these Emperor Rite-Size E cartridges to meet the absolute highest standards of water purification, performance and operational ease. Works in Emperor 280 or 400 filters to provide superior mechanical and chemical filtration.

    Regular Price: USD 11.99

    Special Price USD 6.99

    Regular Price: USD 11.99

    Special Price USD 6.99

  • Marineland Black Diamond Premium Activated Carbon - 40 oz
    Marineland Black Diamond Premium Activated Carbon eliminates discoloration, odors, and impurities. For sparkling clean water. Ideal for all aquarium filters. Heat-activated bituminous coal-based Black Diamond granules are specially sized.

    Regular Price: USD 18.99

    Special Price USD 12.99

    Regular Price: USD 18.99

    Special Price USD 12.99

  • Eheim Ehfimech Mechanical Filter Media - 1 L
    Coarse, mechanically working material is used where water first enters the filter process. Water is swirled and coarse particles of dirt sink. Then the water continues its way through the other filtering layers.

    Regular Price: USD 16.30

    Special Price USD 9.99

    Regular Price: USD 16.30

    Special Price USD 9.99

  • Seachem Purigen - 100 ml
    Purigen is a premium synthetic adsorbent that is unlike any other filtration product. It polishes water to unparalleled clarity. Like hypersorb, purigen darkens progressively as it exhausts, and is easily renewed by treating with household bleach.
    USD 8.38
    USD 8.38
  • Fluval Bio-Max Rings - 500 g
    Fluval BioMax bio rings have a complex pore system creating an optimal environment where beneficial bacteria can thrive. They reduce and control ammonia and nitrate. For freshwater and marine environments.

    Regular Price: USD 11.99

    Special Price USD 7.99

    Regular Price: USD 11.99

    Special Price USD 7.99

  • Boyd Chemi-Pure Elite - 11.74 oz
    • Multi-functional chemical filter media offers countless benefits
    • Removes dissolved organics for crystal clear aquarium water
    • Contains Ferric Oxide to remove phosphates and silicates
    • Stabilizes pH, increases fish life span, and reduces maintenance
    • Great for freshwater, marine, and reef aquariums!
    USD 15.99
    USD 15.99
  • Fluval Carbon Filter Insert - 100 g - 3 pk
    Premium research-grade low-ash Fluval Carbon is highly porous, providing large amounts of surface area for adsorbtion of impurities. It effectively removes heavy metals, odors, discolorations, organic contaminants and pollutants from your aquarium water.

    Regular Price: USD 6.49

    Special Price USD 3.99

    Regular Price: USD 6.49

    Special Price USD 3.99

  • Seapora Filter Media Bag - 5" x 3"
    Perfectly suited for use with Carbon, Zeolite, Peat, Phosphate removing resins or any other loose media your aquarium may require. They are ideal for use in almost any kind of filter, and feature a durable drawstring design making them fully reusable.

    Regular Price: USD 1.29

    Special Price USD 1.16

    Regular Price: USD 1.29

    Special Price USD 1.16

  • Marineland Diamond Blend Premium Carbon - 50 oz
    Marineland Diamond Blend Premium Activated Carbon and Ammonia-Neutralizing crystals are ideal for new aquariums. This special formulation of Black Diamond and super-effective White Diamond cleans and conditions aquarium water.

    Regular Price: USD 7.99

    Special Price USD 5.49

    Regular Price: USD 7.99

    Special Price USD 5.49

  • Tetra Whisper Bio-Bags - Economy - Large - 12 pk
    Whisper Bio-Bag Filter Cartridges make clear water simple. Ultra-activated carbon absorbs odors and discoloration better than competing brands, while dense, dual-sided mesh catches debris and fish waste. These economy cartridges are easy to assemble.

    Regular Price: USD 12.99

    Special Price USD 7.99

    Regular Price: USD 12.99

    Special Price USD 7.99

  • Eheim Substrat Pro Biological Filter Media - 1 L
    Substrat pro offers perfect colonization conditions to the important purification bacteria through the high bulk density of the spherical shape and the perfect surface structure. Reduces peak nitrite loads, and can be rinsed and re-used several times.

    Regular Price: USD 24.76

    Special Price USD 15.99

    Regular Price: USD 24.76

    Special Price USD 15.99

  • Fluval Water Polishing Pads for 304/404/305/405/306/406 - 6 pk
    Fluval Water Polishing Pads are uniquely designed to fit Fluval Canister Filters. These extra thick micro-fine polyester pads effectively trap micro particles and debris as water passes through. For freshwater and marine environments.

    Regular Price: USD 4.99

    Special Price USD 2.99

    Regular Price: USD 4.99

    Special Price USD 2.99

  • Eheim Carbon Filter Pads for 2217 Canister Filter - 3 pk
    Eheim Carbon Filter Pads are a great way to polish your aquarium water of debris, odors and discoloration. They should be replaced every 3-4 weeks for optimum results.

    Regular Price: USD 20.10

    Special Price USD 9.99

    Regular Price: USD 20.10

    Special Price USD 9.99

  • Eheim Fine Filter Pads for 2217 Canister Filter - 3 pk
    Eheim's Fine White Filter Pad is used as the last stage of filtration, to polish water of very fine particles before it is returned to the aquarium. Once it has become soiled, it should be replaced to avoid damage to the motor head of the filter.

    Regular Price: USD 18.62

    Special Price USD 12.99

    Regular Price: USD 18.62

    Special Price USD 12.99

  • Boyd Chemi-Pure Blue - 11 oz
    • The ultimate all-in-one filter media for marine and reef aquariums
    • Combines activated carbon with premium ion exchange resins
    • Reduces organic compounds, phosphates, silicates, and more!
    • Raises redox while helping to stabilize and maintain pH
    • Promotes a cleaner, clearer, and healthier aquarium environment
    USD 19.99
    USD 19.99
  • Eheim Substrat Pro Biological Filter Media - 2 L
    Substrat pro offers perfect colonization conditions to the important purification bacteria through the high bulk density of the spherical shape and the perfect surface structure. Reduces peak nitrite loads, and can be rinsed and re-used several times.

    Regular Price: USD 40.74

    Special Price USD 27.99

    Regular Price: USD 40.74

    Special Price USD 27.99

  • Fluval ClearMax Filter Insert - 100 g - 3 pk
    Fluval Clearmax Phosphate Remover for all filters. It traps phosphate, nitrate and nitrite. It also reduces odours, makes maintenance easier and provided crystal clear water to create ideal condidtions for fish.

    Regular Price: USD 13.99

    Special Price USD 8.99

    Regular Price: USD 13.99

    Special Price USD 8.99

  • API Bio-Chem Zorb Pouch - Size 6 - 1 pk
    Bio-Chem Zorb removes organic aquarium pollutants, including colors, odors, heavy metals and toxic gases as well as other compounds that carbon alone cannot remove. Safe for use in fresh or saltwater.

    Regular Price: USD 6.99

    Special Price USD 5.99

    Regular Price: USD 6.99

    Special Price USD 5.99

  • Eheim Coarse Filter Pads for 2217 Canister Filter - 2 pk
    Used as a parting layer between the mechanical (EHFIMECH) and biological filter medium (EHFISUBSTRAT/EHFISUBSTRAT PRO). May be rinsed in tank water or dechlorinated tap water and reused to keep it's biological filtering capabilities.

    Regular Price: USD 18.62

    Special Price USD 9.99

    Regular Price: USD 18.62

    Special Price USD 9.99

  • Fluval Foam Filter Blocks for 404/405/406 - 2 pk
    Captures large particles and debris for effective mechanical filtration. Custom fit to prevent bypass, they have a pore size that allows efficient water flow with less clogging for long-lasting filtration. For freshwater and marine environments.

    Regular Price: USD 5.99

    Special Price USD 3.99

    Regular Price: USD 5.99

    Special Price USD 3.99

  • Eheim MECHpro - 2 L
    • Used with freshwater or saltwater aquarium filters
    • Performs biologically healthy water conditioning
    • Media is residue free, easy to clean and reusable
    • Pre-filter media to capture tiny/coarse dirt particles
    • Ideally combined with SUBSTRATpro or bioMECH
    USD 23.99
    USD 23.99
  • Amiracle Bio Balls - 300 pk
    Aqua ball filtration media - the ultimate in aquatic filtration. 1.5" pronged ball, 13.05 square feet of surface area per gallon.

    Regular Price: USD 29.99

    Special Price USD 19.99

    Regular Price: USD 29.99

    Special Price USD 19.99

  • Hagen Activated Carbon Filter Insert for AquaClear 70/300 - 3 pk
    AquaClear Activated Carbon Filter Inserts improve water clarity for fresh and saltwater aquariums. Exclusively designed for the AquaClear Power Filters, they provide superior adsorption qualities which eliminate odors, discoloration and impurities.

    Regular Price: USD 9.99

    Special Price USD 6.99

    Regular Price: USD 9.99

    Special Price USD 6.99

  • Fluval Bio-Max Rings - 1100 g
    Fluval BioMax bio rings have a complex pore system creating an optimal environment where beneficial bacteria can thrive. They reduce and control ammonia and nitrate. For freshwater and marine environments.

    Regular Price: USD 16.99

    Special Price USD 12.99

    Regular Price: USD 16.99

    Special Price USD 12.99

  • Marineland Filter Cartridge for Penguin 170B/200B/330B/350B - Rite-Size C - 3 pk
    Marineland Rite-Size Cartridges are designed to meet the highest standards of water purification, performance, and operational ease. Each pre-assembled cartridge slides easily into place, providing superior mechanical and chemical filtration.

    Regular Price: USD 7.49

    Special Price USD 4.99

    Regular Price: USD 7.49

    Special Price USD 4.99

  • Seapora Filter Media Bag - 12" x 8"
    Perfectly suited for use with Carbon, Zeolite, Peat, Phosphate removing resins or any other loose media your aquarium may require. They are ideal for use in almost any kind of filter, and feature a durable drawstring design making them fully reusable.

    Regular Price: USD 1.79

    Special Price USD 1.61

    Regular Price: USD 1.79

    Special Price USD 1.61

  • Aqueon ProFlex BioMedia Accessory Pack - Model 4
    • Kit turns your ProFlex Sump into a traditional wet/dry trickle filter
    • Great for use in freshwater and fish-only saltwater applications
    • Provides advanced biological filtration for a heavy fish load
    • Includes filter media and tray, trickle-down grid, and bioballs
    • Compatible with Aqueon ProFlex Modular Sump - Model 4

    Regular Price: USD 59.99

    Special Price USD 39.99

    Regular Price: USD 59.99

    Special Price USD 39.99

  • Marineland Filter Cartridge for Penguin 110B/125B/150B - Rite-Size B - 6 pk
    Marineland Rite-Size Cartridges are designed to meet the highest standards of water purification, performance, and operational ease. Each pre-assembled cartridge slides easily into place, providing superior mechanical and chemical filtration.

    Regular Price: USD 9.49

    Special Price USD 6.99

    Regular Price: USD 9.49

    Special Price USD 6.99

  • Seapora Filter Media Bag - 8" x 6"
    Perfectly suited for use with Carbon, Zeolite, Peat, Phosphate removing resins or any other loose media your aquarium may require. They are ideal for use in almost any kind of filter, and feature a durable drawstring design making them fully reusable.

    Regular Price: USD 1.59

    Special Price USD 1.43

    Regular Price: USD 1.59

    Special Price USD 1.43

  • Hagen Activated Carbon Filter Insert for AquaClear 110/500 - 1 pk
    AquaClear Activated Carbon Filter Inserts improve water clarity for fresh and saltwater aquariums. Exclusively designed for the AquaClear Power Filters, they provide superior adsorption qualities which eliminate odors, discoloration and impurities.

    Regular Price: USD 5.49

    Special Price USD 3.49

    Regular Price: USD 5.49

    Special Price USD 3.49

  • Marineland Micron Cartridge for Magnum 220/350
    Designed for fast clean-ups and removal of microscopic particles. Polishes water to absolute crystal clarity. Reusable cartridge fits all Marineland Magnum Canister Filters, including the HOT Magnum. Will filter out particles as small as 8 microns.

    Regular Price: USD 10.99

    Special Price USD 6.49

    Regular Price: USD 10.99

    Special Price USD 6.49

  • Eheim Substrat Pro Biological Filter Media - 5 L
    Substrat pro offers perfect colonization conditions to the important purification bacteria through the high bulk density of the spherical shape and the perfect surface structure. Reduces peak nitrite loads, and can be rinsed and re-used several times.

    Regular Price: USD 96.04

    Special Price USD 55.99

    Regular Price: USD 96.04

    Special Price USD 55.99

  • Fluval Bio-Foam for Fluval 306/406 - 2 pk
    • Designed exclusively for Fluval canister filters
    • Provides exceptional biological and mechanical filtration
    • Optimal surface area for growth of beneficial nitrifying bacteria
    • Traps particulate matter to keep water clear
    • Ideal for freshwater and saltwater aquariums

    Regular Price: USD 4.49

    Special Price USD 2.99

    Regular Price: USD 4.49

    Special Price USD 2.99

  • Seachem Matrix Bio-Media - 1 L
    Matrix is a high porosity biomedia that provides efficient biofiltration for the removal of nitrogenous waste. Matrix is a porous inorganic solid about 10 mm in diameter. Matrix is compatible with all types of wet or wet-dry filters.
    USD 10.29
    USD 10.29
  • Replacement Filter Cartridge - Large - 12 pk
    • This enhances aquarium water quality and clarity
    • 25% + more activated carbon than leading brands
    • These cartridges are dual-sided with dense-floss
    • Ensures an even distribution of carbon throughout
    • This eliminates particles, debris, toxins and odors

    Regular Price: USD 26.99

    Special Price USD 19.99

    Regular Price: USD 26.99

    Special Price USD 19.99

  • Eheim Carbon Filter Pads for 2213 Canister Filter - 3 pk
    Eheim Carbon Filter Pads are a great way to polish your aquarium water of debris, odors and discoloration. They should be replaced every 3-4 weeks for optimum results.

    Regular Price: USD 14.56

    Special Price USD 9.99

    Regular Price: USD 14.56

    Special Price USD 9.99

  • Eheim Filter Bag for 2250/2260/3450/3460
    Filter Media Canister-Eheim. Eheim Filter Bag. Designed to hold granular media of any sort, preventing it from clogging motor head assemblies, while effectively filtering aquarium water.

    Regular Price: USD 12.49

    Special Price USD 9.39

    Regular Price: USD 12.49

    Special Price USD 9.39

  • Fluval Edge Pre-Filter Sponge
    Exclusively for the Fluval EDGE Power filter, this pre-filter sponge traps fine debris and easily connects to the filter intake so that your small or baby inhabitants are protected from being drawn into the filter.

    Regular Price: USD 2.99

    Special Price USD 2.49

    Regular Price: USD 2.99

    Special Price USD 2.49

  • Fluval Foam Filter Blocks for 204/205/206/304/305/306 - 2 pk
    Captures large particles and debris for effective mechanical filtration. Custom fit to prevent bypass, they have a pore size that allows efficient water flow with less clogging for long-lasting filtration. For freshwater and marine environments.

    Regular Price: USD 4.99

    Special Price USD 3.49

    Regular Price: USD 4.99

    Special Price USD 3.49

  • Fluval Foam Filter Blocks for FX5/FX6 - 3 pk
    Custom fit to prevent bypass, they have a pore size that allows efficient water flow with less clogging for long-lasting filtration. These inserts also enhance biological filtration.

    Regular Price: USD 11.99

    Special Price USD 9.49

    Regular Price: USD 11.99

    Special Price USD 9.49

  • Seachem Renew - 4 L
    Renew is an effective and economical replacement for activated carbon. While renew is capable of organic removal and sub-micron filtration, it is less aggressive than carbon. It will not alter ph, remove trace elements, or release phosphates.
    USD 25.47
    USD 25.47
  • Seapora Poly Pad - 18" x 10"
    Seapora Filter Pads can be cut & shaped to fit any filtration system, such as: Canister Filters, Hang-On Filters, Trickle Filters, Pond Filters, and other mechanical filter applications.

    Regular Price: USD 4.39

    Special Price USD 3.95

    Regular Price: USD 4.39

    Special Price USD 3.95

  • Eheim Coarse Filter Pads for 2213 Canister Filter - 2 pk
    Used as a parting layer between the mechanical (EHFIMECH) and biological filter medium (EHFISUBSTRAT/EHFISUBSTRAT PRO). May be rinsed in tank water or dechlorinated tap water and reused to keep it's biological filtering capabilities.

    Regular Price: USD 9.60

    Special Price USD 4.99

    Regular Price: USD 9.60

    Special Price USD 4.99

  • Eheim Fine Filter Pads for 2213 Canister Filter - 3 pk
    Eheim's Fine White Filter Pad is used as the last stage of filtration, to polish water of very fine particles before it is returned to the aquarium. Once it has become soiled, it should be replaced to avoid damage to the motor head of the filter.

    Regular Price: USD 11.36

    Special Price USD 5.99

    Regular Price: USD 11.36

    Special Price USD 5.99

  • Lee's Carbon Cartridges for Under Gravel Filters - 2 pk
    Easy-to-install cartridges, are filled with high-grade, activated carbon. Use with Lee's Premium, Original, or Economy under gravel filter elbows. Keeps tank sparkling clean

    Regular Price: USD 2.99

    Special Price USD 1.79

    Regular Price: USD 2.99

    Special Price USD 1.79

  • Boyd Chemi-Pure - 10 oz
    Chemi-Pure makes it easier to maintain crystal clear water, contant pH, and lower ammonia and nitrate levels. Reduces the need for water changes. It has been tested and proven to help fish live 4-5 times longer than in any other closed system.
    USD 10.99
    USD 10.99
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