10 Best Saltwater Aquariums 2025: According to Reviews | Chewy

The 10 Best Saltwater Aquariums

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How we created this saltwater aquarium list

We leveraged input from our veterinarians and artificial intelligence to identify key considerations to help you find the best 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 saltwater aquariums.

Key saltwater aquarium considerations

Compatibility

Durability

Ease of Use

Effectiveness

1
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 5-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 5-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 5-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 5-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 5-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 5-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 5-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 5-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 5-gal

Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 5-gal

Rated 4.8 out of 5 stars
41
$64.83Chewy Price
($12.97/gl)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.7/5
Excellent

Durability

4.8/5
Excellent

Ease of Use

4.7/5
Excellent

Effectiveness

4.8/5
Excellent

Is this saltwater aquarium right for my pet?

Material

Glass, Silicone

Aquarium Type

Saltwater, Freshwater

Capacity (Max)

5-gal

Fish Type

Marine Fish, Tropical Freshwater
2
Tetra Glass Aquarium, 20-gal
Tetra Glass Aquarium, 20-gal
Tetra Glass Aquarium, 20-gal
Tetra Glass Aquarium, 20-gal
Tetra Glass Aquarium, 20-gal

Tetra Glass Aquarium, 20-gal

Rated 4.8 out of 5 stars
16
$99.99Chewy Price
($5.00/gl)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.8/5
Excellent

Durability

4.7/5
Excellent

Ease of Use

4.7/5
Excellent

Effectiveness

4.7/5
Excellent

Is this saltwater aquarium right for my pet?

Material

Glass

Aquarium Type

Saltwater, Freshwater

Capacity (Max)

20-gal

Fish Type

Betta, Bottom Feeder, Cichlid, Discus...
3
Coralife LED BioCube Aquarium Kit, 16-gal
Coralife LED BioCube Aquarium Kit, 16-gal
Coralife LED BioCube Aquarium Kit, 16-gal
Coralife LED BioCube Aquarium Kit, 16-gal
Coralife LED BioCube Aquarium Kit, 16-gal
Coralife LED BioCube Aquarium Kit, 16-gal
Coralife LED BioCube Aquarium Kit, 16-gal
Coralife LED BioCube Aquarium Kit, 16-gal
Coralife LED BioCube Aquarium Kit, 16-gal

Coralife LED BioCube Aquarium Kit, 16-gal

Rated 4.2 out of 5 stars
30
$346.35Chewy Price
($21.65/gl)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.5/5
Great

Durability

4.4/5
Great

Ease of Use

4.2/5
Great

Effectiveness

4.4/5
Great

Is this saltwater aquarium right for my pet?

Material

Glass

Aquarium Type

Nano Tank, Saltwater, Freshwater

Capacity (Max)

16-gal

Fish Type

Tropical Freshwater, Marine Fish
4
biOrb Classic LED Fish Aquarium, Silver, 4-gal
biOrb Classic LED Fish Aquarium, Silver, 4-gal
biOrb Classic LED Fish Aquarium, Silver, 4-gal
biOrb Classic LED Fish Aquarium, Silver, 4-gal

biOrb Classic LED Fish Aquarium, Silver, 4-gal

Rated 4.1 out of 5 stars
23
$90.64Chewy Price
($22.66/gl)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.2/5
Great

Durability

4.1/5
Great

Ease of Use

4.1/5
Great

Effectiveness

4.1/5
Great

Is this saltwater aquarium right for my pet?

Material

Acrylic, Plastic

Aquarium Type

Freshwater

Capacity (Max)

4-gal

Fish Type

Tropical Freshwater, Marine Invertebrate, Betta, Goldfish...
5
Tetra Glass Aquarium, 29-gal
Tetra Glass Aquarium, 29-gal
Tetra Glass Aquarium, 29-gal
Tetra Glass Aquarium, 29-gal

Tetra Glass Aquarium, 29-gal

Rated 4.3 out of 5 stars
19
$136.79Chewy Price
($4.72/gl)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.7/5
Excellent

Durability

4.7/5
Excellent

Ease of Use

4.7/5
Excellent

Effectiveness

4.7/5
Excellent

Is this saltwater aquarium right for my pet?

Material

Glass, Metal, Steel

Aquarium Type

Saltwater, Freshwater

Capacity (Max)

29-gal

Fish Type

Betta, Bottom Feeder, Cichlid, Discus...
6
Lifegard Nano Cube Low Iron Ultra Clear Glass Tank, 5-mm, 3-gal
Lifegard Nano Cube Low Iron Ultra Clear Glass Tank, 5-mm, 3-gal
Lifegard Nano Cube Low Iron Ultra Clear Glass Tank, 5-mm, 3-gal
Lifegard Nano Cube Low Iron Ultra Clear Glass Tank, 5-mm, 3-gal
Lifegard Nano Cube Low Iron Ultra Clear Glass Tank, 5-mm, 3-gal
Lifegard Nano Cube Low Iron Ultra Clear Glass Tank, 5-mm, 3-gal
Lifegard Nano Cube Low Iron Ultra Clear Glass Tank, 5-mm, 3-gal
Lifegard Nano Cube Low Iron Ultra Clear Glass Tank, 5-mm, 3-gal
Lifegard Nano Cube Low Iron Ultra Clear Glass Tank, 5-mm, 3-gal

Lifegard Nano Cube Low Iron Ultra Clear Glass Tank, 5-mm, 3-gal

Rated 4.6 out of 5 stars
9
$48.92Chewy Price
($16.31/gl)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.2/5
Great

Durability

4.5/5
Great

Ease of Use

4.3/5
Great

Effectiveness

4.4/5
Great

Is this saltwater aquarium right for my pet?

Material

Glass

Aquarium Type

Saltwater, Freshwater

Capacity (Max)

3-gal

Fish Type

Marine Fish, Tropical Freshwater
7
Coralife Silicone SMART BioCube Jr. Aquarium Starter Kit, 14-gal
Coralife Silicone SMART BioCube Jr. Aquarium Starter Kit, 14-gal
Coralife Silicone SMART BioCube Jr. Aquarium Starter Kit, 14-gal
Coralife Silicone SMART BioCube Jr. Aquarium Starter Kit, 14-gal
Coralife Silicone SMART BioCube Jr. Aquarium Starter Kit, 14-gal
Coralife Silicone SMART BioCube Jr. Aquarium Starter Kit, 14-gal
Coralife Silicone SMART BioCube Jr. Aquarium Starter Kit, 14-gal
Coralife Silicone SMART BioCube Jr. Aquarium Starter Kit, 14-gal
Coralife Silicone SMART BioCube Jr. Aquarium Starter Kit, 14-gal

Coralife Silicone SMART BioCube Jr. Aquarium Starter Kit, 14-gal

Rated 5 out of 5 stars
4
$232.21Chewy Price
($16.59/gl)

Our ratings

Compatibility

4.7/5
Excellent

Durability

4.7/5
Excellent

Ease of Use

4.7/5
Excellent

Effectiveness

4.7/5
Excellent

Is this saltwater aquarium right for my pet?

Material

Silicone

Aquarium Type

Saltwater

Capacity (Max)

14-gal

Fish Type

Marine Fish
8
Tetra Glass Aquarium, 10-gal
Tetra Glass Aquarium, 10-gal
Tetra Glass Aquarium, 10-gal
Tetra Glass Aquarium, 10-gal
Tetra Glass Aquarium, 10-gal

Tetra Glass Aquarium, 10-gal

Rated 4.1 out of 5 stars
10
$63.10Chewy Price
($6.31/gl)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.3/5
Great

Durability

4.7/5
Excellent

Ease of Use

4.7/5
Excellent

Effectiveness

4.3/5
Great

Is this saltwater aquarium right for my pet?

Material

Glass, Steel, Metal

Aquarium Type

Saltwater, Freshwater

Capacity (Max)

10-gal

Fish Type

Betta, Bottom Feeder, Cichlid, Discus...
9
Tetra Glass Aquarium, 5.5-gal
Tetra Glass Aquarium, 5.5-gal
Tetra Glass Aquarium, 5.5-gal

Tetra Glass Aquarium, 5.5-gal

Rated 5 out of 5 stars
2
$49.99Chewy Price
($9.09/gl)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.7/5
Excellent

Durability

4.7/5
Excellent

Ease of Use

4.7/5
Excellent

Effectiveness

4.7/5
Excellent

Is this saltwater aquarium right for my pet?

Material

Glass, Steel, Metal

Aquarium Type

Saltwater, Freshwater

Capacity (Max)

5.5-gal

Fish Type

Tropical Freshwater, Betta, Bottom Feeder, Cichlid...
10
Underwater Treasures Aqua One Betta Duo Aquarium, 5.3-gal
Underwater Treasures Aqua One Betta Duo Aquarium, 5.3-gal
Underwater Treasures Aqua One Betta Duo Aquarium, 5.3-gal

Underwater Treasures Aqua One Betta Duo Aquarium, 5.3-gal

Rated 4.2 out of 5 stars
6
$139.99Chewy Price
($26.42/gl)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.3/5
Great

Durability

4.0/5
Great

Ease of Use

4.3/5
Great

Effectiveness

4.0/5
Great

Is this saltwater aquarium right for my pet?

Material

Glass

Aquarium Type

Freshwater

Capacity (Max)

5.3-gal

Fish Type

Tropical Freshwater, Marine Fish