Best Fluval Aquarium Filters in 2026

Chemical filter media designed specifically for the Fluval Flex/Spec/Evo aquarium filters

Effective at removing and reducing nitrite

Helps prevent fish loss and supports beneficial bacteria for a healthier aquatic environment

Combination of Fluval Carbon and Fluval Ammonia Remover helps protect the aquarium from toxic build-ups of ammonia

Chemical filter media eliminates water impurities, odors and discoloration

Opens up space inside the aquarium filter to include additional media if desired

Fluval Foam Filter Block provides effective mechanical filtration by trapping large particles and debris

Biological activity will eventually occur in pore structure

Filter media helps create crystal clear, sparkling aquarium water for healthier aquarium environment

Premium, research grade, low-ash carbon is porous and provides large amounts of surface area for absorption of impurities

Carbon filter media improves water clarity and color, while also removing odors

Ideal for use with most canister filters; for best results, replace every 4 weeks

Performs double duty as both mechanical and chemical filter media

Pad traps small particles and debris for mechanical filtration

Carbon helps remove odors, discolorations, heavy metals and organic contaminants for chemical filtration

Filter Compatibility: Compatible with Fluval Filter Series 106, 206, 306, 406, FX5, FX6, 105, 205, 305, 405, 104, 204, 304, and 404.

Water Clarification: BioMax is a premium-grade biological filter media that provides superior filtration and helps reduce and control ammonia and nitrate levels for a healthy nitrogen level in the water.

Ideal Environment: BioMax helps create crystal clear water, making ideal conditions for fish and plants in your tank. The complex porous design ensures optimal contact time as water passes through.

Mechanical filter media effectively traps micro particles and debris

Durable, extra thick, micro-fine polyester pads

Provides crystal clear aquarium water

Keeps unwanted waste from harming your fish

Rids your tank of debris and also makes use of beneficial bacteria in your aquarium

Includes one foam block and one bag of BioMax, 2.1 ounces

Chemical filter media with two unique filtering sides that combine to provide thorough chemical filtration

Polyester side filters out fine debris and contaminants

Carbon side filters out harmful liquid substances, colorants and odors

2 LAYERS EQUALS CLEAR WATER: This unique 2 Layers in 1 filter media pad combines a typical aquarium filter pad with a water polishing pad. The top layer’s open fiber construction traps LARGER PARTICLES while the bottom layer's dense fiber network TRAPS FINER PARTICLES, working together to produce clean, clear water in your aquarium.

SEE THE DIFFERENCE: When you clean this aquarium fiber pad, see how much more debris it traps compared to other aquarium media pads. Your fish, turtles, and all aquatic pets will be happier and healthier.

CUT TO FIT: FilterFirst filter media aquarium pads can easily be cut to fit your filter. Our unique poly filter pad is PERFECT FOR FRESHWATER, REEF TANKS OR SALTWATER aquariums. Ideal filter pads for aquarium wet dry filters, and will also work in your sump, canister filter media, aquaponic system, and more. They’re also perfect as a turtle tank filter!

Biological filter media enhances the elimination of fish wastes

Large surface area provides optimal colonization of beneficial bacteria

Helps create crystal clear, sparkling aquarium water for healthier aquarium environment

Replacement media for the Fluval C3 Power Filter; For freshwater or marine environments

Absorbs impurities that lead to discoloration and odor

Improves water clarity

Replacement ribbed hosing for the Fluval FX4, FX5 and FX6 Canister Filters (A214, A218 and A219)

Replacement part A20236

Easy to replace

Replacement Motor Seal Ring Gasket for Fluval 304, 305, 306 / 404, 405, 406 Canister Filters

Fluval replacement part A-20063

Rubber seal will perish over time, yearly replacement recommended

Replacement filter media designed for use with the Fluval C2 Power Filter

Performs the first and second stages of mechanical filtration

Porous side captures large particles (Stage 1), while dense polyester side traps finer debris (Stage 2)

Chemical filter media with two unique filtering sides that combine to provide thorough chemical filtration

Polyester side filters out fine debris and contaminants

Carbon side filters out harmful liquid substances, colorants and odors

Premium 2-in-1 chemical and mechanical filter media designed specifically for the Fluval 307/407 and 306/406 High Perfmorance Canister Filters

Effective at removing and controlling phosphate

Effectively traps floating particles for clear water (debris, excess food and waste)

Value Pack 3+1 Units

Replacement media for the Fluval C4 Power Filter; For freshwater or marine environments

Absorbs impurities that lead to discoloration and odor

Improves water clarity

Premium biological and mechanical filtration media designed specifically for the Fluval 306, 307 canister filters

Bio-Foam Max: 2-in-1 biological and mechanical filtration media with rippled surface pattern offers 30% more area for increased debris and waste capture

Bio-Foam: mechanical filtration media precision cut (no gaps) to prevent debris bypass and complex foam structure maintains consistent water flow

6 total 206/306, 207/307 Bio-Foam Max media

For use in freshwater and saltwater aquariums

Ideal surface for growth of beneficial, nitrifying bacteria

Premium biological and mechanical filtration media designed specifically for the Fluval 406, 407 canister filters

Bio-Foam Max: 2-in-1 biological and mechanical filtration media with rippled surface pattern offers 30% more area for increased debris and waste capture

Bio-Foam: mechanical filtration media precision cut (no gaps) to prevent debris bypass and complex foam structure maintains consistent water flow

Chemical filter media that removes toxic ammonia as water passes over it

Provides a healthy environment for well-stocked freshwater aquariums

Controlling ammonia levels reduces stress on fish

Mechanical filter media easily installed over the filter intake

Effectively collects fine debris and keeps your aquarium clean

Prevents small or baby fish from getting trapped in the filter

Fluval eTEC (Efficient Technology) construction employs cutting-edge design, materials & manufacturing methods to deliver powerful pump performance, reduced energy consumption and ultra-quiet operation

Powerful motor generates constant pumping power and pressure that endures over time and re-engineered, precision-crafted pump runs up to 25% quieter than previous generation

Energy-efficient – some 07 series filters draw as little energy as a single household LED lightbulb

Fluval has been providing quality aquatic products at value pricing for years. Whether you have a beginner setup or even up to advanced seasoned aquatic experts, Fluval provides everything you need for quality, healthy aquatic environments.

Made in the USA with quality materials

Field tested to ensure nothing but the best for your pet

Specifically designed for the Fluval 07 and 06 performance canister series for use in freshwater and saltwater aquariums

Increases the amount of oxygen in your tank for healthier fish and plants

Distributes water evenly for delicate aquascapes and eliminates dead spots in your aquarium

Premium biological and mechanical filtration media designed specifically for the Fluval 206, 207 canister filters

Bio-Foam Max: 2-in-1 biological and mechanical filtration media with rippled surface pattern offers 30% more area for increased debris and waste capture

Bio-Foam: mechanical filtration media precision cut (no gaps) to prevent debris bypass and complex foam structure maintains consistent water flow

Premium biological and mechanical filtration prevents premature clogging extending life of subsequent filter media

Rippled surface pattern offers 30% more area to efficiently trap waste and debris

Complex foam construction helps maintain even and consistent water flow and ideal surface for growth of beneficial, nitrifying biological activity

Replacement filter pad specifically designed for the Fluval Chi aquarium series

Polyester pads provide chemical and mechanical stage filtering

Captures small particles and debris and helps keep water clear and clean