Best Filters for Saltwater Aquariums 2026: According to Reviews | Chewy

Best Saltwater Aquarium Filters

Saltwater aquariums need stable water conditions to support healthy fish, corals, and marine life. Aquarium filters play an important role in managing waste, maintaining water clarity and flow, and supporting the balance of the tank over time. From compact systems for smaller setups to more advanced filtration for larger reef tanks, the right filter can help make routine saltwater aquarium care more manageable. Below, you'll find today's best-selling and top-rated saltwater aquarium filters that Chewy pet parents, like you, love. We update this list every week, so you can be sure you're getting the timeliest product recommendations available.

Our Top Picks

How we created this filter list

We leveraged input from our veterinarians and artificial intelligence to identify key considerations to help you find the best filters for saltwater aquarium.
We scanned thousands of customer reviews and ratings and scored each product based on its performance against each of the key considerations. We then considered how popular a product is with Chewy customers and combined that with its key consideration scores to create the list of the best filters for saltwater aquariums.

Key filter considerations

Durability and maintenance

Filtration efficiency

Filtration media

Water flow rate

1
Marineland Black Diamond Activated Carbon Filter Media, 22-oz jar
Marineland Black Diamond Activated Carbon Filter Media, 22-oz jar
Marineland Black Diamond Activated Carbon Filter Media, 22-oz jar
Marineland Black Diamond Activated Carbon Filter Media, 22-oz jar
Marineland Black Diamond Activated Carbon Filter Media, 22-oz jar
Marineland Black Diamond Activated Carbon Filter Media, 22-oz jar

Marineland Black Diamond Activated Carbon Filter Media, 22-oz jar

Rated 4.8 out of 5 stars
265
$11.49 Chewy Price
($0.53/oz)
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Durability and maintenance

4.6/5
Excellent

Filtration efficiency

4.6/5
Excellent

Filtration media

4.7/5
Excellent

Water flow rate

4.6/5
Excellent

Is this filter right for my pet?

Aquarium Type

Saltwater, Freshwater

Fish Type

Marine Fish, Tropical Freshwater
2
Tetra Large Aquarium Carbon Filter, 4 count
Tetra Large Aquarium Carbon Filter, 4 count
Tetra Large Aquarium Carbon Filter, 4 count
Tetra Large Aquarium Carbon Filter, 4 count
Tetra Large Aquarium Carbon Filter, 4 count
Tetra Large Aquarium Carbon Filter, 4 count
Tetra Large Aquarium Carbon Filter, 4 count

Tetra Large Aquarium Carbon Filter, 4 count

Rated 4.8 out of 5 stars
169
$10.77 Chewy Price
($2.70/ea)
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Durability and maintenance

4.6/5
Excellent

Filtration efficiency

4.7/5
Excellent

Filtration media

4.7/5
Excellent

Water flow rate

4.6/5
Excellent

Is this filter right for my pet?

Material

Foam

Fish Type

Marine Fish, Tropical Freshwater
3
Underwater Treasures Seapora Filter Floss, 20-sq ft
Underwater Treasures Seapora Filter Floss, 20-sq ft

Underwater Treasures Seapora Filter Floss, 20-sq ft

Rated 4.8 out of 5 stars
61
$15.99 Chewy Price
($15.99/ea)
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Durability and maintenance

4.4/5
Great

Filtration efficiency

4.3/5
Great

Filtration media

4.2/5
Great

Water flow rate

4.3/5
Great

Is this filter right for my pet?

Aquarium Type

Freshwater

Fish Type

Marine Fish, Tropical Freshwater
4
AquaClear 50 Active Carbon Insert, 3 count
AquaClear 50 Active Carbon Insert, 3 count
AquaClear 50 Active Carbon Insert, 3 count
AquaClear 50 Active Carbon Insert, 3 count

AquaClear 50 Active Carbon Insert, 3 count

Rated 4.8 out of 5 stars
107
$7.98 Chewy Price
($2.66/ea)
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Durability and maintenance

4.6/5
Excellent

Filtration efficiency

4.8/5
Excellent

Filtration media

4.7/5
Excellent

Water flow rate

4.6/5
Excellent

Is this filter right for my pet?

Material

Synthetic Fabric, Mesh

Aquarium Type

Saltwater, Freshwater

Fish Type

Marine Fish, Tropical Freshwater
5
Fluval AC20 Aquarium Power Filter, 5 to 20-gal
Fluval AC20 Aquarium Power Filter, 5 to 20-gal
Fluval AC20 Aquarium Power Filter, 5 to 20-gal
Fluval AC20 Aquarium Power Filter, 5 to 20-gal
Fluval AC20 Aquarium Power Filter, 5 to 20-gal
Fluval AC20 Aquarium Power Filter, 5 to 20-gal

Fluval AC20 Aquarium Power Filter, 5 to 20-gal

Rated 4.5 out of 5 stars
52
$41.99 Chewy Price
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Durability and maintenance

4.4/5
Great

Filtration efficiency

4.9/5
Excellent

Filtration media

4.8/5
Excellent

Water flow rate

4.9/5
Excellent

Is this filter right for my pet?

Aquarium Type

Saltwater, Freshwater
6
Aqueon Quietflow E Internal Power Filter, 10-gal
Aqueon Quietflow E Internal Power Filter, 10-gal
Aqueon Quietflow E Internal Power Filter, 10-gal
Aqueon Quietflow E Internal Power Filter, 10-gal
Aqueon Quietflow E Internal Power Filter, 10-gal
Aqueon Quietflow E Internal Power Filter, 10-gal
Aqueon Quietflow E Internal Power Filter, 10-gal
Aqueon Quietflow E Internal Power Filter, 10-gal
Aqueon Quietflow E Internal Power Filter, 10-gal

Aqueon Quietflow E Internal Power Filter, 10-gal

Rated 4.3 out of 5 stars
67
$14.92 Chewy Price
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Durability and maintenance

4.1/5
Great

Filtration efficiency

4.4/5
Great

Filtration media

4.4/5
Great

Water flow rate

4.4/5
Great

Is this filter right for my pet?

Aquarium Type

Saltwater, Freshwater

Fish Type

Betta, Goldfish
7
Boyd Chemi-pure Elite All-In-One Chemical Filtration Media, 11.74-oz jar, Bulk 6-pack

Boyd Chemi-pure Elite All-In-One Chemical Filtration Media, 11.74-oz jar, Bulk 6-pack

Rated 4.6 out of 5 stars
73
$86.25 Chewy Price
($1.23/oz)
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Durability and maintenance

4.7/5
Excellent

Filtration efficiency

4.7/5
Excellent

Filtration media

4.7/5
Excellent

Water flow rate

4.7/5
Excellent

Is this filter right for my pet?

Aquarium Type

Saltwater, Freshwater

Fish Type

Tropical Freshwater
8
Tetra Whisper Internal Aquarium Power Filter with BioScrubber, 20-40 gal
Tetra Whisper Internal Aquarium Power Filter with BioScrubber, 20-40 gal
Tetra Whisper Internal Aquarium Power Filter with BioScrubber, 20-40 gal
Tetra Whisper Internal Aquarium Power Filter with BioScrubber, 20-40 gal
Tetra Whisper Internal Aquarium Power Filter with BioScrubber, 20-40 gal
Tetra Whisper Internal Aquarium Power Filter with BioScrubber, 20-40 gal
Tetra Whisper Internal Aquarium Power Filter with BioScrubber, 20-40 gal
Tetra Whisper Internal Aquarium Power Filter with BioScrubber, 20-40 gal
Tetra Whisper Internal Aquarium Power Filter with BioScrubber, 20-40 gal

Tetra Whisper Internal Aquarium Power Filter with BioScrubber, 20-40 gal

Rated 4.2 out of 5 stars
591
$34.97 Chewy Price
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Durability and maintenance

4.1/5
Great

Filtration efficiency

4.4/5
Great

Filtration media

4.3/5
Great

Water flow rate

4.2/5
Great

Is this filter right for my pet?

Material

Synthetic Fabric, Mesh

Aquarium Type

Saltwater, Freshwater

Fish Type

Marine Fish, Tropical Freshwater
9
AA Aquarium Green Killing Machine Clip-On UV System, 3-watt
AA Aquarium Green Killing Machine Clip-On UV System, 3-watt
AA Aquarium Green Killing Machine Clip-On UV System, 3-watt
AA Aquarium Green Killing Machine Clip-On UV System, 3-watt
AA Aquarium Green Killing Machine Clip-On UV System, 3-watt

AA Aquarium Green Killing Machine Clip-On UV System, 3-watt

Rated 4.1 out of 5 stars
111
$36.07 Chewy Price
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Durability and maintenance

4.2/5
Great

Filtration efficiency

4.2/5
Great

Filtration media

4.3/5
Great

Water flow rate

4.3/5
Great

Is this filter right for my pet?

Aquarium Type

Saltwater, Freshwater
10
Marina Aquarium Power Filter, 10-gal
Marina Aquarium Power Filter, 10-gal
Marina Aquarium Power Filter, 10-gal
Marina Aquarium Power Filter, 10-gal
Marina Aquarium Power Filter, 10-gal
Marina Aquarium Power Filter, 10-gal
Marina Aquarium Power Filter, 10-gal
Marina Aquarium Power Filter, 10-gal

Marina Aquarium Power Filter, 10-gal

Rated 4.3 out of 5 stars
152
$25.88 Chewy Price
($25.88/ea)
Promo, New Customers Only: Spend $49+, get $20 eGift Card

Our ratings

Durability and maintenance

4.2/5
Great

Filtration efficiency

4.2/5
Great

Filtration media

4.3/5
Great

Water flow rate

4.6/5
Excellent

Is this filter right for my pet?

Material

Plastic

Aquarium Type

Saltwater, Freshwater

Fish Type

Betta, Cichlid, Goldfish, Tropical Freshwater