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 2 (Free Shipping)

37 - 72 of 178 Results

Sort By

Slide 1 of 4

Fluval Aquarium Underwater Filter, 12-30 gal slide 2 of 4

Fluval Aquarium Underwater Filter, 12-30 gal slide 3 of 4

Fluval Aquarium Underwater Filter, 12-30 gal slide 4 of 4

Slide 1 of 4

Fluval Aquarium Underwater Filter, 12-30 gal

Rated 3.7 out of 5 stars

$61.01 Chewy Price

$76.99 List Price

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

Slide 1 of 2

API Water Softener Pillow, Size 5 slide 2 of 2

Slide 1 of 2

API Water Softener Pillow, Size 5

Rated 4.4 out of 5 stars

$7.58 Chewy Price

$10.28 List Price

Autoship Price

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

AquaClear Zeo-Carb Filter Insert, Size 110

Rated 4.6 out of 5 stars

$10.00 Chewy Price

$10.99 List Price

Autoship Price

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

Boyd Chemi-Pure Filter Media, 10-oz jar

Rated 4.9 out of 5 stars

$13.49 Chewy Price

$14.99 List Price

Autoship Price

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

Underwater Treasures Seapora Quartz Aquarium Media Rings

$7.99 Chewy Price

Autoship Price

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

Fluval Water Polishing Pad, 3 count

Rated 4.6 out of 5 stars

$5.34 Chewy Price

$7.99 List Price

Autoship Price

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

Penn-Plax Nitrate Reducer Aquarium Fish Filter Media Pad

Rated 4.7 out of 5 stars

$7.99 Chewy Price

Autoship Price

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

Cobalt Aquatics Total Nitrate, Phosphate & Metal Removing Resin, 12.5-oz bottle

Rated 5 out of 5 stars

$24.63 Chewy Price

$42.92 List Price

Autoship Price

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

Fluval C2 Poly/Foam Pad Filter Media, 3 count

Rated 5 out of 5 stars

$8.41 Chewy Price

$11.49 List Price

Autoship Price

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

Penn-Plax Carbon Infused Aquarium Fish Filter Media Pad

Rated 5 out of 5 stars

$7.99 Chewy Price

Autoship Price

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

Marineland Penguin Refillable Filter Media Cartridge, Penguin 200 & 350

Rated 4.7 out of 5 stars

$4.09 Chewy Price

Autoship Price

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

API Filstar XP Aquarium Filtration Pads, 20 ppi

Rated 5 out of 5 stars

$14.16 Chewy Price

$16.98 List Price

Autoship Price

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

AquaClear Activated Carbon Filter Insert, Size 70

Rated 4.8 out of 5 stars

$8.72 Chewy Price

$8.99 List Price

Autoship Price

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

Penn-Plax Poly Fiber Aquarium Fish Filter Media Pad

$7.99 Chewy Price

Autoship Price

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

API Filstar XP Super Micro Filtration Aquarium Canister Filter Filtration Pads, 2 count

Rated 4.1 out of 5 stars

$15.38 Chewy Price

Autoship Price

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

Fluval Bio-Foam Filter Media, 4 count

Rated 4.2 out of 5 stars

$5.38 Chewy Price

$17.50 List Price

Autoship Price

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

Fluval C4 Ammonia Remover Filter Media, 3 count

Rated 5 out of 5 stars

$8.88 Chewy Price

$12.99 List Price

Autoship Price

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

Aqueon QuietFlow Specialty 30/50 Ammonia Reducing Filter Pad

Rated 4.9 out of 5 stars

$8.79 Chewy Price

$10.99 List Price

Autoship Price

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

Fluval C3 Activated Carbon Filter Media, 6 count

Rated 5 out of 5 stars

$13.28 Chewy Price

$13.98 List Price

Autoship Price

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

Marineland 2-In-1 Penguin Pro 175 275 & 375 Aquarium Bio-Foam & PreFilter

Rated 5 out of 5 stars

$5.65 Chewy Price

$8.39 List Price

Autoship Price

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

Fluval U3 Foam Pad Filter Media

Rated 4.9 out of 5 stars

$3.58 Chewy Price

$4.99 List Price

Autoship Price

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

Cobalt Aquatics Total Reef Superior Rechargeable Pollutant Removing Marine Aquarium Resins, 22....

$54.63 Chewy Price

$89.23 List Price

Autoship Price

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

Fluval C4 Activated Carbon Filter Media, 6 count

Rated 4.8 out of 5 stars

$18.80 Chewy Price

Autoship Price

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

Underwater Treasures Seapora Super-Activated Carbon Media Bag, 3 count

Rated 5 out of 5 stars

$5.49 Chewy Price

Autoship Price

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

Fluval U2 Foam Pad Filter Media, 2 count

Rated 4.3 out of 5 stars

$6.28 Chewy Price

$7.98 List Price

Autoship Price

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

Aqueon QuietFlow 10 Carbon Reducing Specialty Filter Pad, 4 count

Rated 4.5 out of 5 stars

$7.85 Chewy Price

$8.49 List Price

Autoship Price

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

Penn-Plax Poly Fiber Plus Aquarium Fish Filter Media Pad

Rated 5 out of 5 stars

$8.99 Chewy Price

Autoship Price

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

Penn-Plax Ammonia Reducer Aquarium Fish Filter Media Pad

Rated 4 out of 5 stars

$7.99 Chewy Price

Autoship Price

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

Marineland C-160 & C-220 Canister Polishing Filter Pads Media, 2 count

Rated 5 out of 5 stars

$5.81 Chewy Price

$12.99 List Price

Autoship Price

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

Eheim Substrate Pro Biological Filter Media, 5-L

Rated 5 out of 5 stars

$71.54 Chewy Price

$87.99 List Price

Autoship Price

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

Marineland C-160 & C-220 Canister Foam Filter Media, 2 count

Rated 5 out of 5 stars

$6.08 Chewy Price

$12.99 List Price

Autoship Price

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

Tetra Prefilter FK3 Replacement Cylinder Foam Media Filter

Rated 4.6 out of 5 stars

$7.09 Chewy Price

$8.19 List Price

Autoship Price

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

Fluval U3 Poly/Carbon Underwater Filter Media, 2 count

Rated 4.9 out of 5 stars

$8.00 Chewy Price

$9.49 List Price

Autoship Price

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

Fluval C4 Zeo-Carb Filter Media, 3 count

Rated 4.8 out of 5 stars

$10.73 Chewy Price

$15.99 List Price

Autoship Price

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

Fluval C4 Poly/Foam Pad Filter Media, 3 count

Rated 4.9 out of 5 stars

$11.77 Chewy Price

$15.99 List Price

Autoship Price

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

Underwater Treasures Seapora Activated Carbon Media Bag, 24-oz

Rated 4.8 out of 5 stars

$7.99 Chewy Price

Autoship Price

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

Fluval C3 Poly/Foam Pad Filter Media, 3 count

Rated 4.2 out of 5 stars

$8.06 Chewy Price

$11.99 List Price

Autoship Price

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

Aquarium Filter Media

Fluval Aquarium Underwater Filter, 12-30 gal

API Water Softener Pillow, Size 5

AquaClear Zeo-Carb Filter Insert, Size 110

Boyd Chemi-Pure Filter Media, 10-oz jar

Underwater Treasures Seapora Quartz Aquarium Media Rings

Fluval Water Polishing Pad, 3 count

Penn-Plax Nitrate Reducer Aquarium Fish Filter Media Pad

Cobalt Aquatics Total Nitrate, Phosphate & Metal Removing Resin, 12.5-oz bottle

Fluval C2 Poly/Foam Pad Filter Media, 3 count

Penn-Plax Carbon Infused Aquarium Fish Filter Media Pad

Marineland Penguin Refillable Filter Media Cartridge, Penguin 200 & 350

API Filstar XP Aquarium Filtration Pads, 20 ppi

AquaClear Activated Carbon Filter Insert, Size 70

Penn-Plax Poly Fiber Aquarium Fish Filter Media Pad

API Filstar XP Super Micro Filtration Aquarium Canister Filter Filtration Pads, 2 count

Fluval Bio-Foam Filter Media, 4 count

Fluval C4 Ammonia Remover Filter Media, 3 count

Aqueon QuietFlow Specialty 30/50 Ammonia Reducing Filter Pad

Fluval C3 Activated Carbon Filter Media, 6 count

Marineland 2-In-1 Penguin Pro 175 275 & 375 Aquarium Bio-Foam & PreFilter

Fluval U3 Foam Pad Filter Media

Cobalt Aquatics Total Reef Superior Rechargeable Pollutant Removing Marine Aquarium Resins, 22....

Fluval C4 Activated Carbon Filter Media, 6 count

Underwater Treasures Seapora Super-Activated Carbon Media Bag, 3 count

Fluval U2 Foam Pad Filter Media, 2 count

Aqueon QuietFlow 10 Carbon Reducing Specialty Filter Pad, 4 count

Penn-Plax Poly Fiber Plus Aquarium Fish Filter Media Pad

Penn-Plax Ammonia Reducer Aquarium Fish Filter Media Pad

Marineland C-160 & C-220 Canister Polishing Filter Pads Media, 2 count

Eheim Substrate Pro Biological Filter Media, 5-L

Marineland C-160 & C-220 Canister Foam Filter Media, 2 count

Tetra Prefilter FK3 Replacement Cylinder Foam Media Filter

Fluval U3 Poly/Carbon Underwater Filter Media, 2 count

Fluval C4 Zeo-Carb Filter Media, 3 count

Fluval C4 Poly/Foam Pad Filter Media, 3 count

Underwater Treasures Seapora Activated Carbon Media Bag, 24-oz

Fluval C3 Poly/Foam Pad Filter Media, 3 count

Brand

Aquarium Type

Fish Type

Aquarium Concern

Deals & Savings

Price

Customer Rating