Do I need filter media for my aquarium?

You do need filter media for your aquarium. Filters are essential to the health of your tank, and different filter media perform a variety of functions. Mechanical media filter out particles and debris to keep the water clean. Biological filtration media support colonies of beneficial bacteria that break down toxins in the water. Chemical media help remove toxins and change water chemistry. Many aquarists use all three together to ensure the water stays safe and healthy for fish.

Where do I put filter media in my fish tank?

You put filter media inside the filter for your fish tank. Many filters let you customize your filtration using different types of fish tank filter media. Others come with their own filter media that you will need to replace periodically. Check the directions for your aquarium filter to learn what kind of filtration media it takes and how to properly replace the filter media.

How often should I change the filter media in my aquarium?

You should change the filter media in your aquarium as often as necessary to maintain healthy water conditions. The frequency will vary depending on things like the bio-load of the tank, maintenance, feeding amounts and what kind of filtration media you are using. Mechanical media like sponges should be changed when they can no longer be rinsed properly, usually after 3 to 6 months. Chemical media should usually be replaced every 1 to 2 months, on average. Biological media houses living bacteria colonies and can last for many years, so you shouldn't need to replace it very often. Check the instructions on your filter media to learn how and when to clean it and for guidance on how often it should be replaced.

Which filter media is best for fish tanks?

The best filter media for your fish tank will vary based on things like the type of tank you have, how big it is, and how many fish live in it. Generally speaking, however, the best filter media for most fish tanks is a combination of mechanical, biological and chemical filtration media. Most modern filters incorporate all three of these filtration media to keep your tank water clean and healthy for your fish.

Aquarium Filter Media - Page 3 (Free Shipping)

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Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count slide 2 of 7

Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count slide 3 of 7

Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count slide 4 of 7

Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count slide 5 of 7

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Slide 1 of 7

Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count

Rated 3 out of 5 stars

$30.57 Chewy Price

$36.99 List Price

$29.04 Autoship Price

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Slide 1 of 2

Fluval C2 & C3 C-Nodes Filter Media, 3.5-oz slide 2 of 2

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Fluval C2 & C3 C-Nodes Filter Media, 3.5-oz

Rated 4 out of 5 stars

$11.40 Chewy Price

$21.99 List Price

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Aqueon Filter Media Carbon Media Fish Filter Media, 1-lb slide 2 of 2

Aqueon Filter Media Carbon Media Fish Filter Media, 1-lb

Rated 5 out of 5 stars

$11.99 Chewy Price

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Eheim Classic 600 Fine Foam Pad 2217 Filter Media slide 2 of 4

Eheim Classic 600 Fine Foam Pad 2217 Filter Media slide 3 of 4

Eheim Classic 600 Fine Foam Pad 2217 Filter Media slide 4 of 4

Eheim Classic 600 Fine Foam Pad 2217 Filter Media

Rated 1 out of 5 stars

$21.59 Chewy Price

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Marineland C-530 Canister Polishing Filter Pads Media, 2 count

Rated 5 out of 5 stars

$8.48 Chewy Price

$13.39 List Price

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Fluval C4 C-Nodes Filter Media, 7-oz

Rated 3.7 out of 5 stars

$12.34 Chewy Price

$27.99 List Price

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Cobalt Aquatics Total Freshwater Aquarium Organic Removing & Ion Exchange Resins, 12-oz bottle

Rated 5 out of 5 stars

$33.69 Chewy Price

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Fluval Edge Carbon Replacement Filter Media, 3 count

Rated 4.7 out of 5 stars

$4.40 Chewy Price

$7.99 List Price

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Cobalt Aquatics Long Lasting Pelletized Carbon, 16-oz bottle

Rated 5 out of 5 stars

$13.47 Chewy Price

$22.43 List Price

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Eheim 2213 Canister Fine Filter Pads, 3 count

Rated 4.7 out of 5 stars

$10.34 Chewy Price

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Fluval C2 Zeo-Carb Filter Media, 3 count

Rated 5 out of 5 stars

$7.99 Chewy Price

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Boyd Chemi-Pure Green Nano Ultimate Filter Media, 5 pack

Rated 4.7 out of 5 stars

$18.80 Chewy Price

$18.99 List Price

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Aqueon QuietFlow 10 Phosphate Reducing Specialty Filter Pad, 8 count

Rated 4.3 out of 5 stars

$12.46 Chewy Price

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Eheim Ehfimech Mechanical Filter Media, 5-L

Rated 5 out of 5 stars

$53.45 Chewy Price

$59.99 List Price

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Marineland C-530 Canister Foam Filter Media, 6 count

Rated 5 out of 5 stars

$36.39 Chewy Price

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Fluval C3 Bio-Screen Pad Filter Media, 3 count

Rated 5 out of 5 stars

$8.69 Chewy Price

$14.99 List Price

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SunGrow Activated Carbon Charcoal Pellets Filter Media for Pond & Betta Aquarium Water Filtrati...

Rated 4.3 out of 5 stars

$13.99 Chewy Price

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Eheim bioMECH Mechanical Pre-Filter Media, 1-L

Rated 5 out of 5 stars

$24.99 Chewy Price

$32.98 List Price

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API Super Activated Carbon Aquarium Canister Filter Filtration Pouch, 2 count

Rated 4.1 out of 5 stars

$15.26 Chewy Price

$23.96 List Price

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Aqueon ProFlex 200 Micron Filter Bags, 2 count

Rated 4.3 out of 5 stars

$15.93 Chewy Price

$21.99 List Price

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Boyd Chemi-Pure Grande Filter Media, 40-oz bottle

Rated 5 out of 5 stars

$43.72 Chewy Price

$51.95 List Price

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Eheim 2213 Canister Coarse Filter Pads, 2 count

Rated 4.7 out of 5 stars

$12.10 Chewy Price

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Fluval U2 Poly/Carbon Underwater Filter Media, 2 count

Rated 5 out of 5 stars

$6.59 Chewy Price

$7.99 List Price

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Laguna PT8170 Filter Foam

Rated 5 out of 5 stars

$9.49 Chewy Price

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Eheim MECHpro Mechanical Pre-Filter Media, 1-L

$16.59 Chewy Price

$18.45 List Price

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Fluval C4 Foam Pad Filter Media, 4 count

Rated 5 out of 5 stars

$17.08 Chewy Price

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Free 1-3 day delivery on first-time orders over $35
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Boyd Chemi-Pure Green Ultimate Filter Media, 11-oz jar

Rated 4.3 out of 5 stars

$23.39 Chewy Price

$25.99 List Price

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Free 1-3 day delivery on first-time orders over $35
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Tetra Pond Clear Choice Bio-Filter Replacement Pads

Rated 4.8 out of 5 stars

$19.72 Chewy Price

$21.49 List Price

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Free 1-3 day delivery on first-time orders over $35
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API Filstar XP Microfiltration Aquarium Canister Filter Filtration Pads, 3 count

Rated 4.6 out of 5 stars

$9.80 Chewy Price

$11.78 List Price

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Bundle: Aqueon QuietFlow Medium Replacement Filter Cartridges + 10 Ammonia Reducing Specialty F...

$31.14 Chewy Price

$31.74 List Price

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Marineland K2 Biological Media Aquarium Filter, 95-gm

$18.72 Chewy Price

$21.09 List Price

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Fluval C2 Activated Carbon Filter Media, 6 count

Rated 4.4 out of 5 stars

$14.60 Chewy Price

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Free 1-3 day delivery on first-time orders over $35
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Fluval U1 Foam Pad Filter Media

Rated 4 out of 5 stars

$3.49 Chewy Price

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Eheim 2213 Canister Carbon Filter Pads, 3 count

Rated 4.7 out of 5 stars

$12.49 Chewy Price

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Eheim 2215 Canister Carbon Filter Pads, 3 count

$15.95 Chewy Price

$16.49 List Price

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Cobalt Aquatics Regenerable, High-Capacity Organic Removing Resin, 21-oz bottle

$38.89 Chewy Price

$76.53 List Price

Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Eheim Classic 2215 Carbon Fine Filter Pads, 3 pack

Rated 1 out of 5 stars

$14.28 Chewy Price

Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Aquarium Filter Media

Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count

Fluval C2 & C3 C-Nodes Filter Media, 3.5-oz

Aqueon Filter Media Carbon Media Fish Filter Media, 1-lb

Eheim Classic 600 Fine Foam Pad 2217 Filter Media

Marineland C-530 Canister Polishing Filter Pads Media, 2 count

Fluval C4 C-Nodes Filter Media, 7-oz

Cobalt Aquatics Total Freshwater Aquarium Organic Removing & Ion Exchange Resins, 12-oz bottle

Fluval Edge Carbon Replacement Filter Media, 3 count

Cobalt Aquatics Long Lasting Pelletized Carbon, 16-oz bottle

Eheim 2213 Canister Fine Filter Pads, 3 count

Fluval C2 Zeo-Carb Filter Media, 3 count

Boyd Chemi-Pure Green Nano Ultimate Filter Media, 5 pack

Aqueon QuietFlow 10 Phosphate Reducing Specialty Filter Pad, 8 count

Eheim Ehfimech Mechanical Filter Media, 5-L

Marineland C-530 Canister Foam Filter Media, 6 count

Fluval C3 Bio-Screen Pad Filter Media, 3 count

SunGrow Activated Carbon Charcoal Pellets Filter Media for Pond & Betta Aquarium Water Filtrati...

Eheim bioMECH Mechanical Pre-Filter Media, 1-L

API Super Activated Carbon Aquarium Canister Filter Filtration Pouch, 2 count

Aqueon ProFlex 200 Micron Filter Bags, 2 count

Boyd Chemi-Pure Grande Filter Media, 40-oz bottle

Eheim 2213 Canister Coarse Filter Pads, 2 count

Fluval U2 Poly/Carbon Underwater Filter Media, 2 count

Laguna PT8170 Filter Foam

Eheim MECHpro Mechanical Pre-Filter Media, 1-L

Fluval C4 Foam Pad Filter Media, 4 count

Boyd Chemi-Pure Green Ultimate Filter Media, 11-oz jar

Tetra Pond Clear Choice Bio-Filter Replacement Pads

API Filstar XP Microfiltration Aquarium Canister Filter Filtration Pads, 3 count

Marineland K2 Biological Media Aquarium Filter, 95-gm

Fluval C2 Activated Carbon Filter Media, 6 count

Fluval U1 Foam Pad Filter Media

Eheim 2213 Canister Carbon Filter Pads, 3 count

Eheim 2215 Canister Carbon Filter Pads, 3 count

Cobalt Aquatics Regenerable, High-Capacity Organic Removing Resin, 21-oz bottle

Eheim Classic 2215 Carbon Fine Filter Pads, 3 pack

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