Best Fluval Filters Filter Media 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

Chemical filter media removes heavy metals, odors, discolorations and pollutants

Premium, research-grade carbon with vast surface area for effectively absorbing impurities

Help creates crystal clear, sparkling aquarium water

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

Mechanical filter media captures large particles and debris

Custom fit to prevent debris bypass

Ideal pore size allows efficient water flow and longer media lifespan

Quality Filtration: Quick-Clear is specifically designed to fit the Fluval 307/407 and 306/406 canister filters. These thick, ultra-fine polyester water polishing pads effectively trap micro particles and debris, leaving your aquarium crystal clear.

Usage: Ideal for use when cloudy water occurs or immediately following tank maintenance.

Mechanical Filters: Durable, extra thick, micro-fine polyester pads help trap micro particles and debris.

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

Replacement media for the Fluval C3 Power Filter

Performs the first and second stages of mechanical filtration

Filters out debris

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 reducing and controlling toxic ammonia spikes and trapping floating particles for clear water (debris, excess food and waste)

Ideal for new and heavily stocked aquariums and use after medicating fish

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)

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

Filter Compatibility: Compatible with Fluval Series Canister Filters 06, 07, FX, and more.

Water Clarification: ClearMax is a premium-grade resin chemical filter media that absorbs phosphate, nitrite, and nitrate. The filter media makes aquarium maintenance easier and reduces odors.

Ideal Environment: ClearMax helps create crystal clear water, making ideal conditions for fish and plants in your tank.

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

Water Softening: Peat Granules are recommended for fish that prefer soft, acidic water (i.e. Amazonian cichlids, discus, angelfish). They soften aquarium water naturally and help achieve pH levels that are needed for breeding certain tropical species.

Ideal Environment: These granules contain humic acid, tanning agents and trace elements that are essential for various life processes. Each granule is highly concentrated for maximum effectiveness.

Chemical filter media improves water conditions for long lasting cleaner surfaces, reducing overall maintenance

Eliminates cloudy water, odors and discolorations

Use ClearX in conjunction with your regular water change and cleaning routine

Versatile Underwater Filtration: Whether you’re looking for a submersible filter that offers multi-stage cleaning, quiet operation, versatile horizontal and vertical mounting options or ultra-fast media changes, U series has something to offer everyone.

Filter Levels: Easy-grip water control panel and redesigned media cartridge allows U1 filter to trap more debris. U2, U3, and U4 filters have additional chemical and biological filters to remove odors, improve water clarity, and balance water chemistry.

Easy Replacement: Convenient flip-top lid allows for quick and easy access to the filter cartridge for maintenance or replacement.

9 total Bio-Foam aquarium filter media

Provides mechanical and bio filtration for fish tanks

Foam allows water to flow through while trapping waste and debris

【Compatible with】:Our foam filter pack is designed for perfect compatibility with Fluval (TM) external canister filters models 304 / 305 / 306 (300 liter / 70 gallon) and 404 / 405 / 406 (400 liter / 100 gallon).

【High Effective】: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.

Product 1: Filter Compatibility: Compatible with Fluval filter models: 106, 206, 306, 406, FX5, FX6,105, 205, 305, 405, 104, 204, 304, and 404.

Product 1: Water Clarification: Zeo-Carb is a premium blend of Fluval Carbon and Ammonia Remover that eliminates water impurities, odors and discoloration, while simultaneously removing toxic ammonia.

Product 1: Ideal Environment: Chemical filter media improves water clarity and color, while also removing odors.

Product 1: FILTRATION: Purigen ranges in color from almost white (cream) to light yellow. Seachem Purigen is not a mixture of ion exchangers or adsorbents, but a unique macro-porous synthetic polymer that removes soluble and insoluble impurities from water.

Product 1: SELECTIVITY: Seachem Purigen is an organic filtration resin that works hard to remove nitrogenous compounds and waste produced by fish, corals, and even plants, making your water crystal clear.

Product 1: CAPACITY: Being both spherical and macroreticular, Seachem Purigen has microscopic pores that increase its usable surface area to many times that of a purely spherical resin.