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 4 (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

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

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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

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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

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Laguna Pressure-Flo PF2000 UVC Filter slide 2 of 7

Laguna Pressure-Flo PF2000 UVC Filter slide 3 of 7

Laguna Pressure-Flo PF2000 UVC Filter slide 4 of 7

Laguna Pressure-Flo PF2000 UVC Filter slide 5 of 7

Laguna Pressure-Flo PF2000 UVC Filter slide 6 of 7

Laguna Pressure-Flo PF2000 UVC Filter slide 7 of 7

Laguna Pressure-Flo PF2000 UVC Filter

$389.99 Chewy Price

$411.99 List Price

Autoship Price

Free 1-3 day delivery on first-time orders
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Tetra Pond Debris Handling Pump

Rated 4 out of 5 stars

$193.95 Chewy Price

$357.09 List Price

Autoship Price

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

OASE Indoor Aquatics Biostyle 20 Fish Filter, Dark Blue

$42.99 Chewy Price

Autoship Price

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

Tetra Bio-Active Pressure BP2500 Filter

$239.99 Chewy Price

$338.69 List Price

Autoship Price

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

Aquascape UltraKlear UV Clarifier Pond Filter, 14 W

$217.89 Chewy Price

$249.98 List Price

Autoship Price

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

Fish Mate Compact Bio Filter, 250 GPH

$72.50 Chewy Price

Autoship Price

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

Fish Mate 3000 PUV Pressurised Pond Filter, 1500 GPH

$354.99 Chewy Price

$390.99 List Price

Autoship Price

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

AquaFX Carbon Block Cartridge Aquarium Filter

$8.99 Chewy Price

$13.99 List Price

Autoship Price

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

AquaFX Deionization DI Aquarium Filter

$26.49 Chewy Price

$39.99 List Price

Autoship Price

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

AquaFX TFC Membrane Aquarium Filter, 150 GPD

$62.99 Chewy Price

$99.99 List Price

Autoship Price

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

Penn-Plax Cascade Aquarium Canister Filter, 30-gal

Rated 3 out of 5 stars

$109.99 Chewy Price

$139.00 List Price

Autoship Price

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

SunSun CUV-109 UV Sterilizer Pond Filter, 396 GPH

Rated 4 out of 5 stars

$45.13 Chewy Price

Autoship Price

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

SunGrow Betta Fish & Turtle Sponge Small Aquarium Tank Water System Filter, up to 10-gal

$3.90 Chewy Price

$17.99 List Price

Autoship Price

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

Penn-Plax Cascade 80 Hang On Aquarium Filter

$24.05 Chewy Price

$39.99 List Price

Autoship Price

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

Penn-Plax Powerhead Driven Nano Aquarium Sponge Filter

$29.99 Chewy Price

Autoship Price

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

Aquascape Container Water Garden Fish Aquarium Filter

$26.60 Chewy Price

$34.98 List Price

Autoship Price

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

Aquatop PFE-9 FORZA 300 GPH Power Filter W/ Surface Skimmer Fish Filter, 40-80-gal

$13.99 Chewy Price

$74.99 List Price

Autoship Price

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

Marineland Magnum 200 Polishing Internal Canister Filter, Black, 60-gal

$56.99 Chewy Price

Autoship Price

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

Tetra BP2500 Bio-Active Pressure Filter with 18 watt UV Clarifier, 2500-gal

$458.89 Chewy Price

Autoship Price

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

Fluval Sea PS1 Fish Protein Skimmer

$90.99 Chewy Price

Autoship Price

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

Out of Stock

Lifegard Submersible Nano Filter with 92 gph Pump, Gray, 30-gal

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

Out of Stock

SunSun HW-702B Aquarium UV Sterilizer Canister Filter, 75-gal

Rated 3 out of 5 stars

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

Out of Stock

Lifegard HOF-20 Double Capacity Slim Design Hang on Filter, 20-gal

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

Out of Stock

JBJ Aquarium Reaction HOB Aquarium Power Filter, 50-gal

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

Out of Stock

Lifegard HOF-30 Triple Capacity Slim Design Hang-On-Filter, 30-gal

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

Out of Stock

Savio FilterWeir Set, 31-in

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

Out of Stock

Lifegard Turbo Reactor-X-Large Side Flow Aquarium Filter, 850-gal

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

Out of Stock

Fiji Cube Aqueon Sump Baffle Kit, 40-gal

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

Out of Stock

Fiji Cube Advanced Reef Sump 2nd Gen, 12 inch

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

Out of Stock

Lifegard HOF-40 Quadruple Slim Design Hang-On-Filter, 40-gal

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

Out of Stock

Lifegard Turbo Reactor-Medium Side Flow Aquarium Filter, 150-gal

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

Out of Stock

Lifegard Aquatics Duo Pond Fish Pond Filter

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

Out of Stock

Savio Stainless Steel Uvinex High-Output Pond Filter System, 35-watt

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

Out of Stock

Penn-Plax Cascade 150 Power Fish Filter. Blue

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

Out of Stock

Lifegard FB300 Fluidized Bed Filter, 300-gal

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

Out of Stock

Lifegard HOF-10 Single Stage Slim Design Hang on Filter, 10-gal

Free delivery on first-time orders over $35
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

Laguna Pressure-Flo PF2000 UVC Filter

Tetra Pond Debris Handling Pump

OASE Indoor Aquatics Biostyle 20 Fish Filter, Dark Blue

Tetra Bio-Active Pressure BP2500 Filter

Aquascape UltraKlear UV Clarifier Pond Filter, 14 W

Fish Mate Compact Bio Filter, 250 GPH

Fish Mate 3000 PUV Pressurised Pond Filter, 1500 GPH

AquaFX Carbon Block Cartridge Aquarium Filter

AquaFX Deionization DI Aquarium Filter

AquaFX TFC Membrane Aquarium Filter, 150 GPD

Penn-Plax Cascade Aquarium Canister Filter, 30-gal

SunSun CUV-109 UV Sterilizer Pond Filter, 396 GPH

SunGrow Betta Fish & Turtle Sponge Small Aquarium Tank Water System Filter, up to 10-gal

Penn-Plax Cascade 80 Hang On Aquarium Filter

Penn-Plax Powerhead Driven Nano Aquarium Sponge Filter

Aquascape Container Water Garden Fish Aquarium Filter

Aquatop PFE-9 FORZA 300 GPH Power Filter W/ Surface Skimmer Fish Filter, 40-80-gal

Marineland Magnum 200 Polishing Internal Canister Filter, Black, 60-gal

Tetra BP2500 Bio-Active Pressure Filter with 18 watt UV Clarifier, 2500-gal

Fluval Sea PS1 Fish Protein Skimmer

Lifegard Submersible Nano Filter with 92 gph Pump, Gray, 30-gal

SunSun HW-702B Aquarium UV Sterilizer Canister Filter, 75-gal

Lifegard HOF-20 Double Capacity Slim Design Hang on Filter, 20-gal

JBJ Aquarium Reaction HOB Aquarium Power Filter, 50-gal

Lifegard HOF-30 Triple Capacity Slim Design Hang-On-Filter, 30-gal

Savio FilterWeir Set, 31-in

Lifegard Turbo Reactor-X-Large Side Flow Aquarium Filter, 850-gal

Fiji Cube Aqueon Sump Baffle Kit, 40-gal

Fiji Cube Advanced Reef Sump 2nd Gen, 12 inch

Lifegard HOF-40 Quadruple Slim Design Hang-On-Filter, 40-gal

Lifegard Turbo Reactor-Medium Side Flow Aquarium Filter, 150-gal

Lifegard Aquatics Duo Pond Fish Pond Filter

Savio Stainless Steel Uvinex High-Output Pond Filter System, 35-watt

Penn-Plax Cascade 150 Power Fish Filter. Blue

Lifegard FB300 Fluidized Bed Filter, 300-gal

Lifegard HOF-10 Single Stage Slim Design Hang on Filter, 10-gal

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