Marina

Shop Chewy for the lowest prices on fish filters and media that will keep your aquarium nice and clean! Check out our wide selection of filters, filter cartridges, filter parts and filter media. We carry brands like AquaClear, Tetra, API, Marineland and Fluval. *FREE* shipping on orders $49+ and the BEST customer service!

Every aspiring aquarist should know a thing or two about [aquarium filters](https://www.chewy.com/b/filters-925) and [aquarium filter media](https://www.chewy.com/b/filter-media-927) before getting started. There are some basics that you'll want to be familiar with, and after that, it's up to you to determine which types of fish you want to keep and how big the tank should be. In general, the [best aquarium filter](https://www.chewy.com/b/filters-925) will be one that keeps the water sparkling clean and fits your particular needs. An aquarium filter doesn't just clear up murky water, its prime function is to improve the water quality and maintain the air that your fish breathe underwater. In order to do that, water is swept into a filter and passed through filter media. It goes through three stages of filtration before returning to the tank. Mechanical filtration uses a material like [AquaClear Foam Inserts](https://www.chewy.com/aquaclear-foam-filter-insert/dp/128679) to catch solid debris such as fish waste or uneaten food. Chemical filtration uses activated carbon to remove impurities, odors and discoloration. The last stage is biological, which helps beneficial bacteria eliminate toxic ammonia and nitrites. Many of the filter cartridges available at Chewy combine two of these steps. [Marineland Bio-Wheel Penguin Power Filter Cartridges](https://www.chewy.com/marineland-bio-wheel-penguin-rite/dp/126014) trap waste particles (mechanical) and then filter water through Black Diamond premium activated carbon (chemical).The next question is which filter to get for your tank setup. A popular aquarium filter style for hobbyists is a power filter that hangs on the back of the tank. This type of external aquarium filter gives you all three stages of filtration, and it's easy to access for cleaning. The [Marineland Bio-Wheel Emperor 400](https://www.chewy.com/marineland-bio-wheel-emperor-power/dp/133092) is a great example, and it works for both freshwater and marine tanks up to 90 gallons.Those under 40 gallons require a small aquarium filter, or internal filter, like [Tetra Whisper Power Filter](https://www.chewy.com/tetra-whisper-power-filter/dp/133132). Internal filters are submersible and provide quiet, three-stage filtration. For the serious enthusiast with larger tanks teeming with fish, an external aquarium filter is best. Canister filters sit underneath the tank and are ideal for more than 40-gallon capacities. Water is siphoned out, filtered and then returned to the aquarium. [Penn-Plax Cascade Aquarium Filter](https://www.chewy.com/penn-plax-cascade-aquarium-canister/dp/131228) is easy to install and comes with everything you need—large filter trays, startup filter media and input/output tubing. Chewy carries a wide variety of each of these types of filters, along with replacement accessory parts, aquarium filter media and cartridges.

Related Categories: [Fish Food and Treats](https://www.chewy.com/b/food-treats-886), [Fish Aquariums and Starter Kits](https://www.chewy.com/b/aquariums-starter-kits-1735), [Fish Heating and Lighting](https://www.chewy.com/b/heating-lighting-1736), [Fish Water Care](https://www.chewy.com/b/water-care-906), [Fish Tank Décor and Accessories](https://www.chewy.com/b/decor-accessories-1737), [Fish Tank Cleaning and Maintenance](https://www.chewy.com/b/cleaning-maintenance-929), [Fish Health and Wellness](https://www.chewy.com/b/health-wellness-937), [Fish Books and Gifts](https://www.chewy.com/b/gifts-books-1933), [Fish Supplies](https://www.chewy.com/b/fish-885), [Fish Filter Cartridges](https://www.chewy.com/b/filter-cartridges-926), [Fish Filter Parts and Accessories](https://www.chewy.com/b/filter-parts-accessories-928)

Fish Filters & Media: Parts & Cartridges - Low Prices (Ships Free) | Chewy

Every aspiring aquarist should know a thing or two about aquarium filters and filter media before getting started. There are some basics that you’ll want to be familiar with, and after that, it’s up to you to determine which types of fish you want to keep and how big the tank should be. In general, the best aquarium filter will be one that keeps the water sparkling clean and fits your particular needs. 

An aquarium filter doesn’t just clear up murky water. Its prime function is to improve the water quality and maintain the air that your fish breathe underwater. In order to do that, water is swept into a filter and passed through filter media. It goes through three stages of filtration before returning to the tank. Mechanical filtration uses a material like AquaClear’s Foam Inserts to catch solid debris such as fish waste or uneaten food. Chemical filtration uses activated carbon to remove impurities, odors and discoloration. The last stage is biological, which helps beneficial bacteria eliminate toxic ammonia and nitrites. Many of the filter cartridges available at Chewy combine two of these steps. Marineland’s Bio-Wheel Penguin Power Filter Cartridges trap waste particles (mechanical) and then filter water through Black Diamond premium activated carbon (chemical).

The next question is which filter to get for your tank setup. A popular aquarium filter style for hobbyists is a power filter that hangs on the back of the tank. This type of external aquarium filter gives you all three stages of filtration, and it’s easy to access for cleaning. The Marineland Bio-Wheel Emperor 400 is a great example, and it works for both freshwater and marine tanks up to 90 gallons.  

Those under 40 gallons require a small aquarium filter, or internal filter, like Tetra Whisper 10i. Internal filters are submersible and provide quiet, three-stage filtration. For the serious enthusiast with larger tanks teeming with fish, an external aquarium filter is best. Canister filters sit underneath the tank and are ideal for more than 40-gallon capacities. Water is siphoned out, filtered and then returned to the aquarium. Penn-Plax Cascade is easy to install and comes with everything you need—large filter trays, startup filter media and input/output tubing. 

Chewy carries a wide variety of each of these types of filters, along with replacement accessory parts, aquarium filter media and cartridges.

Filters & Media

Marina Fish Tank Filters & Media

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Shop Chewy for the best deals on Marina Fish Tank Filters & Media and more with fast free shipping, low prices, and award-winning customer service. Read ratings and reviews so you can find the right Marina Fish Tank Filters & Media for your pet.

Marina Fish Tank Filters & Media (Free Shipping) | Chewy

Filters

Filter Cartridges

True

Autoship & Save Eligible

Anjon

AquaClear

Aquascape

Aquatic Life

Aquatop

Aqueon

Beckett

biOrb

Boyd

Canada Fresh

CaribSea

Cobalt Aquatics

Coralife

Danner

Dennerle

Eheim

Fiji Cube

Fish Mate

Fluval

Hagen

Hikari

Instant Ocean

inTank

JBJ Aquarium

Jebao

Kent

Koller Products

Lee's Aquarium & Pets

Lifegard Aquatics

Marineland

Microbe-Lift

Penn-Plax

Pond Boss

Rowa

Savio

Simplicity

Spaces Places

SunGrow

SunSun

Tetra

Tetrafauna

TL Reefs

Tom Pet Products

Underwater Treasure

Zoo Med

Brand

Freshwater

Saltwater

Aquarium Type

Tropical Freshwater

Betta

Cichlid

Goldfish

Marine Fish

Fish Type

Filter

Filter Cartridge

Thermometer

Product Type

[0,9.99]

[10,19.99]

[20,29.99]

Price

[4,5]

[3,5]

[2,5]

[1,5]

Customer Rating

Marina Aquarium Power Filter, 10-gal

Marina Slim Carbon Filter Cartridge, 3 count

Marineland Rite-Size Z Filter Cartridge, 3 count + Marina Aquarium Floating Thermometer

Marineland Eclipse Rite-Size Z Filter Cartridge, 3 count & Marina Floating Thermometer with Suction Cup for Aquariums