Do all fish tanks and aquariums need filters?

All fish tanks and aquariums do need filters to clean the water and prevent the buildup of toxic substances. Different aquariums may need different types of aquarium water filters, depending on the fish inside them and whether they are saltwater or freshwater tanks. Chewy carries a wide range of fish tank filters to suit a variety of filtration needs.

What are the best aquarium filters?

The best aquarium filters are those that effectively clean the water by removing chemical impurities and biological toxins in addition to filtering dirt and debris. Choose a filter that is suited to the type of tank you have, as saltwater tanks have different filtration needs than freshwater tanks. Sponge or air-powered fish tank water filters may be adequate for tanks with low filtration needs, but power or hang-on-back filters, canister filters and wet/dry filters can provide more powerful filtration.

What size fish tank filter do I get?

Get a fish tank filter in a size that is suitable for your fish tank. Most fish tank filters list the tank capacity they are suited for, and they also usually list how many gallons of water per minute they can filter.

What are the different types of filters for fish tanks?

The different types of filters for fish tanks are sponge filters, hang on back (HOB) filters, canister filters, trickle or wet/dry filters, box filters and under gravel filters. Filters perform any of three main types of aquarium filtration: biological, mechanical and chemical. Many filters are designed to perform several or all three filtration functions at once, providing your fish with clean and clear water that is free from debris, chemical buildup and harmful toxins.

How often do you need to change aquarium filters?

You need to change aquarium filters at different times depending on which kind you have. Mechanical filters don't need to be replaced until they stop filtering or start falling apart, and replacing them too often can disrupt the balance of the aquarium. The chemical filter should be changed every month, or every two months at the very least. Biological filters allow beneficial bacteria to grow, so replace them only when they start to fail or fall apart. Most aquarium filters, including multi-stage fish tank filters, will usually have instructions for use, maintenance and care, so read all the instructions carefully and follow them well.

Aquarium & Fish Tank Filters - Page 3 (Free Shipping)

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Aqueon Quietflow E Internal Power Filter, 10-gal slide 2 of 9

Aqueon Quietflow E Internal Power Filter, 10-gal slide 3 of 9

Aqueon Quietflow E Internal Power Filter, 10-gal slide 4 of 9

Aqueon Quietflow E Internal Power Filter, 10-gal slide 5 of 9

Aqueon Quietflow E Internal Power Filter, 10-gal slide 6 of 9

Aqueon Quietflow E Internal Power Filter, 10-gal slide 7 of 9

Aqueon Quietflow E Internal Power Filter, 10-gal slide 8 of 9

Aqueon Quietflow E Internal Power Filter, 10-gal slide 9 of 9

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Aqueon Quietflow E Internal Power Filter, 10-gal

Rated 3 out of 5 stars

$15.77 Chewy Price

$18.49 List Price

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

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

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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

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Fluval Aquarium Power Filter, 70-gal slide 2 of 9

Fluval Aquarium Power Filter, 70-gal slide 3 of 9

Fluval Aquarium Power Filter, 70-gal slide 4 of 9

Fluval Aquarium Power Filter, 70-gal slide 5 of 9

Fluval Aquarium Power Filter, 70-gal slide 6 of 9

Fluval Aquarium Power Filter, 70-gal slide 7 of 9

Fluval Aquarium Power Filter, 70-gal slide 8 of 9

Fluval Aquarium Power Filter, 70-gal slide 9 of 9

Fluval Aquarium Power Filter, 70-gal

Rated 3.3 out of 5 stars

$62.60 Chewy Price

$79.99 List Price

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

Slide 1 of 5

Tetra Pond Skimmer Filter

$58.31 Chewy Price

$91.39 List Price

Autoship Price

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Marineland Magniflow 220 Canister Filter

Rated 3 out of 5 stars

$148.71 Chewy Price

$201.99 List Price

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SunSun HW-304B Aquarium UV Sterilizer Canister Filter, 150-gal

Rated 2.7 out of 5 stars

$95.98 Chewy Price

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Free 365-day returns

Marineland Magniflow 160 Canister Filter

Rated 4.3 out of 5 stars

$119.39 Chewy Price

$152.99 List Price

Autoship Price

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

Tetra Pond Filtration Fountain Kit with Flat Box Filter, 250 - 500 gal

Rated 2.7 out of 5 stars

$87.18 Chewy Price

$153.19 List Price

Autoship Price

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

Eheim 2180 Pro 3 Fish Aquarium Thermofilter

$699.99 Chewy Price

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

Eheim Classic 600 External Aquarium Canister Filter, 159-gal

Rated 3.7 out of 5 stars

$212.59 Chewy Price

Autoship Price

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

Tetra Pond Skimmer Replacement Pad

$12.99 Chewy Price

Autoship Price

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

Aqueon QuietFlow Internal Shrimp Aquarium Filter, 20-gal

Rated 2 out of 5 stars

$22.36 Chewy Price

$29.99 List Price

Autoship Price

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

Eheim Pro 4+ 250 Aquarium Canister Filter

$214.86 Chewy Price

$229.99 List Price

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

Tetra Pond Waterfall Filter

Rated 3.7 out of 5 stars

$64.77 Chewy Price

$117.39 List Price

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

Jebao Easy Clean Bio-Pressure CF-10 UV Sterilizer Pond Filter

Rated 2.7 out of 5 stars

$72.38 Chewy Price

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

OASE Indoor Aquatics CrystalSkim 600 Fish Filter

$58.99 Chewy Price

Autoship Price

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

Hydor Prime External Aquarium & Terrarium Filter, Black, 30 to 60-gal tank

$159.99 Chewy Price

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

Tetra GreenFree Ultraviolet Pond Clarifier, 9-watt

Rated 2.3 out of 5 stars

$116.16 Chewy Price

$213.39 List Price

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

Eheim Classic 2211 Aquarium Canister Filter

$110.00 Chewy Price

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Free 365-day returns

Tetra Clrchoice Aquarium Filter

$109.99 Chewy Price

$116.99 List Price

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

Zoo Med Betta Clean Aquarium Filter

$17.89 Chewy Price

Autoship Price

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

OASE Indoor Aquatics Oxymax 400 Fish Filter

$46.99 Chewy Price

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

OASE Indoor Aquatics Biocompact 50 Internal Fish Filter

$36.99 Chewy Price

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

Aquael Ultramax 1000 External Water Filter

$203.29 Chewy Price

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

Fluval Sea Mini Fish Protein Skimmer

$61.09 Chewy Price

$73.99 List Price

Autoship Price

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

SunSun Pressurized Pond Filter, 4227 GPH

Rated 3.3 out of 5 stars

$203.86 Chewy Price

Autoship Price

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

Aquael Pat Mini Internal Water Filter

$24.95 Chewy Price

Autoship Price

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

Eheim Classic 2262 Aquarium Filter, 500-gal

Rated 4 out of 5 stars

$527.41 Chewy Price

Autoship Price

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

OASE Indoor Aquatics Biostyle 20 Fish Filter, White

$42.99 Chewy Price

Autoship Price

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

OASE Indoor Aquatics Biocompact 25 Internal Fish Filter

$32.99 Chewy Price

Autoship Price

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

OASE Indoor Aquatics Oxymax 100 Fish Filter

$30.99 Chewy Price

Autoship Price

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

OASE Indoor Aquatics Biostyle 30 Fish Filter, Dark Blue

$59.99 Chewy Price

Autoship Price

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

Fish Mate Powerclenz Bio Filter, 1500 GPH

$221.99 Chewy Price

$244.50 List Price

Autoship Price

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

Aquael Ultramax 1500 External Water Filter

$267.49 Chewy Price

Autoship Price

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

Fish Mate Compact GUV Gravity Pond Filter, 250 GPH

$169.99 Chewy Price

$186.99 List Price

Autoship Price

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

Underwater Treasures Seapora Rite-Fit PF55 Large/Regular Cartridge Power Aquarium Filter, 3 cou...

$7.99 Chewy Price

Autoship Price

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

Aquatic Life Protein Mini Skimmer, 30-gal

Rated 3.7 out of 5 stars

$50.73 Chewy Price

$59.99 List Price

Autoship Price

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

Aquascape UltraKlean Biological Pressure Pond Filter, 2000 GPH

$357.98 Chewy Price

$399.98 List Price

Autoship Price

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

Tetra Bio-Active Pressure BP4000 Filter

$279.99 Chewy Price

Autoship Price

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

Aquarium & Fish Tank Filters

Aqueon Quietflow E Internal Power Filter, 10-gal

Fluval Aquarium Underwater Filter, 12-30 gal

Fluval Aquarium Power Filter, 70-gal

Tetra Pond Skimmer Filter

Marineland Magniflow 220 Canister Filter

SunSun HW-304B Aquarium UV Sterilizer Canister Filter, 150-gal

Marineland Magniflow 160 Canister Filter

Tetra Pond Filtration Fountain Kit with Flat Box Filter, 250 - 500 gal

Eheim 2180 Pro 3 Fish Aquarium Thermofilter

Eheim Classic 600 External Aquarium Canister Filter, 159-gal

Tetra Pond Skimmer Replacement Pad

Aqueon QuietFlow Internal Shrimp Aquarium Filter, 20-gal

Eheim Pro 4+ 250 Aquarium Canister Filter

Tetra Pond Waterfall Filter

Jebao Easy Clean Bio-Pressure CF-10 UV Sterilizer Pond Filter

OASE Indoor Aquatics CrystalSkim 600 Fish Filter

Hydor Prime External Aquarium & Terrarium Filter, Black, 30 to 60-gal tank

Tetra GreenFree Ultraviolet Pond Clarifier, 9-watt

Eheim Classic 2211 Aquarium Canister Filter

Tetra Clrchoice Aquarium Filter

Zoo Med Betta Clean Aquarium Filter

OASE Indoor Aquatics Oxymax 400 Fish Filter

OASE Indoor Aquatics Biocompact 50 Internal Fish Filter

Aquael Ultramax 1000 External Water Filter

Fluval Sea Mini Fish Protein Skimmer

SunSun Pressurized Pond Filter, 4227 GPH

Aquael Pat Mini Internal Water Filter

Eheim Classic 2262 Aquarium Filter, 500-gal

OASE Indoor Aquatics Biostyle 20 Fish Filter, White

OASE Indoor Aquatics Biocompact 25 Internal Fish Filter

OASE Indoor Aquatics Oxymax 100 Fish Filter

OASE Indoor Aquatics Biostyle 30 Fish Filter, Dark Blue

Fish Mate Powerclenz Bio Filter, 1500 GPH

Aquael Ultramax 1500 External Water Filter

Fish Mate Compact GUV Gravity Pond Filter, 250 GPH

Underwater Treasures Seapora Rite-Fit PF55 Large/Regular Cartridge Power Aquarium Filter, 3 cou...

Aquatic Life Protein Mini Skimmer, 30-gal

Aquascape UltraKlean Biological Pressure Pond Filter, 2000 GPH

Tetra Bio-Active Pressure BP4000 Filter

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