10 Best Saltwater Aquarium Supplies 2025: According to Reviews | Chewy

The 10 Best Saltwater Aquarium Supplies

Jump to the list

How we created this saltwater aquarium supply list

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

Key saltwater aquarium supply considerations

Compatibility

Durability

Effectiveness

User-Friendliness

1
Tetra Bio-Bag Large Disposable Filter Cartridges, 12 count
Tetra Bio-Bag Large Disposable Filter Cartridges, 12 count
Tetra Bio-Bag Large Disposable Filter Cartridges, 12 count
Tetra Bio-Bag Large Disposable Filter Cartridges, 12 count
Tetra Bio-Bag Large Disposable Filter Cartridges, 12 count
Tetra Bio-Bag Large Disposable Filter Cartridges, 12 count
Tetra Bio-Bag Large Disposable Filter Cartridges, 12 count

Tetra Bio-Bag Large Disposable Filter Cartridges, 12 count

Rated 4.7 out of 5 stars
779
$14.57Chewy Price
($1.22/ea)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.6/5
Excellent

Durability

4.5/5
Great

Effectiveness

4.6/5
Excellent

User-Friendliness

4.6/5
Excellent

Is this saltwater aquarium supply right for my pet?

Material

Mesh, Synthetic Fabric

Aquarium Type

Freshwater, Saltwater

Fish Type

Tropical Freshwater, Marine Fish
2
API Stress Coat Aquarium Water Conditioner, 16-fl oz bottle
API Stress Coat Aquarium Water Conditioner, 16-fl oz bottle
API Stress Coat Aquarium Water Conditioner, 16-fl oz bottle
API Stress Coat Aquarium Water Conditioner, 16-fl oz bottle
API Stress Coat Aquarium Water Conditioner, 16-fl oz bottle
API Stress Coat Aquarium Water Conditioner, 16-fl oz bottle

API Stress Coat Aquarium Water Conditioner, 16-fl oz bottle

Rated 4.8 out of 5 stars
597
$10.99Chewy Price
($0.69/fl oz)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.5/5
Great

Durability

4.4/5
Great

Effectiveness

4.7/5
Excellent

User-Friendliness

4.5/5
Great

Is this saltwater aquarium supply right for my pet?

Aquarium Type

Freshwater, Saltwater

Fish Type

Tropical Freshwater, Betta, Cichlid, Goldfish...

Health Feature

Anti-Fungal / Anti-Bacterial
3
Marineland Bio-Wheel Penguin Rite-Size C Filter Cartridge, 6 count
Marineland Bio-Wheel Penguin Rite-Size C Filter Cartridge, 6 count
Marineland Bio-Wheel Penguin Rite-Size C Filter Cartridge, 6 count
Marineland Bio-Wheel Penguin Rite-Size C Filter Cartridge, 6 count
Marineland Bio-Wheel Penguin Rite-Size C Filter Cartridge, 6 count

Marineland Bio-Wheel Penguin Rite-Size C Filter Cartridge, 6 count

Rated 4.7 out of 5 stars
667
$19.99Chewy Price
($3.34/ea)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.3/5
Great

Durability

4.4/5
Great

Effectiveness

4.5/5
Great

User-Friendliness

4.4/5
Great

Is this saltwater aquarium supply right for my pet?

Material

Foam

Aquarium Type

Freshwater, Saltwater

Fish Type

Tropical Freshwater, Marine Fish
4
Instant Ocean Sea Salt for Aquariums, 200-gal
Instant Ocean Sea Salt for Aquariums, 200-gal
Instant Ocean Sea Salt for Aquariums, 200-gal
Instant Ocean Sea Salt for Aquariums, 200-gal
Instant Ocean Sea Salt for Aquariums, 200-gal
Instant Ocean Sea Salt for Aquariums, 200-gal

Instant Ocean Sea Salt for Aquariums, 200-gal

Rated 4.7 out of 5 stars
312
$56.90Chewy Price
($0.29/gl)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.5/5
Great

Durability

4.5/5
Great

Effectiveness

4.5/5
Great

User-Friendliness

4.4/5
Great

Is this saltwater aquarium supply right for my pet?

Aquarium Type

Saltwater

Fish Type

Marine Fish, Marine Invertebrate
5
Zoo Med Floating Betta Log
Zoo Med Floating Betta Log
Zoo Med Floating Betta Log
Zoo Med Floating Betta Log
Zoo Med Floating Betta Log
Zoo Med Floating Betta Log

Zoo Med Floating Betta Log

Rated 4.5 out of 5 stars
312
$7.99Chewy Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.4/5
Great

Durability

4.6/5
Excellent

Effectiveness

4.4/5
Great

User-Friendliness

4.6/5
Excellent

Is this saltwater aquarium supply right for my pet?

Material

Wood

Aquarium Type

Freshwater, Saltwater

Fish Type

Betta
6
AquaClear 50 Active Carbon Filter Insert, 3 count

AquaClear 50 Active Carbon Filter Insert, 3 count

Rated 4.8 out of 5 stars
76
$9.99Chewy Price
($3.33/ea)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.5/5
Great

Durability

4.5/5
Great

Effectiveness

4.4/5
Great

User-Friendliness

4.6/5
Excellent

Is this saltwater aquarium supply right for my pet?

Material

Mesh, Synthetic Fabric

Aquarium Type

Saltwater, Freshwater

Fish Type

Tropical Freshwater, Marine Fish
7
Aqueon QuietFlow Large Replacement Filter Cartridges, 15 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 15 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 15 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 15 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 15 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 15 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 15 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 15 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 15 count

Aqueon QuietFlow Large Replacement Filter Cartridges, 15 count

Rated 4.8 out of 5 stars
229
$42.95Chewy Price
($2.87/ea)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.6/5
Excellent

Durability

4.6/5
Excellent

Effectiveness

4.5/5
Great

User-Friendliness

4.4/5
Great

Is this saltwater aquarium supply right for my pet?

Material

Mesh, Synthetic Fabric

Aquarium Type

Freshwater, Saltwater

Fish Type

Marine Fish, Tropical Freshwater
8
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt

LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt

Rated 4.7 out of 5 stars
75
$22.79Chewy Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.6/5
Excellent

Durability

4.5/5
Great

Effectiveness

4.5/5
Great

User-Friendliness

4.7/5
Excellent

Is this saltwater aquarium supply right for my pet?

Material

Plastic

Aquarium Type

Saltwater

Capacity (Max)

≥120-250-L

Fish Type

Tropical Freshwater
9
Frisco Colorful Plastic Aquarium Plant Set, 6 count
Frisco Colorful Plastic Aquarium Plant Set, 6 count
Frisco Colorful Plastic Aquarium Plant Set, 6 count

Frisco Colorful Plastic Aquarium Plant Set, 6 count

Rated 4.9 out of 5 stars
27
$10.39Chewy Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.7/5
Excellent

Durability

4.8/5
Excellent

Effectiveness

4.8/5
Excellent

User-Friendliness

4.8/5
Excellent

Is this saltwater aquarium supply right for my pet?

Material

Plastic

Aquarium Type

Saltwater, Freshwater

Fish Type

Goldfish
10
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 11-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 11-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 11-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 11-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 11-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 11-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 11-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 11-gal
Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 11-gal

Lifegard Long Clear Glass Bookshelf Aquarium, 5-mm, 11-gal

Rated 4.7 out of 5 stars
38
$96.36Chewy Price
($8.76/gl)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.7/5
Excellent

Durability

4.8/5
Excellent

Effectiveness

4.7/5
Excellent

User-Friendliness

4.8/5
Excellent

Is this saltwater aquarium supply right for my pet?

Material

Glass, Silicone

Aquarium Type

Saltwater, Freshwater

Capacity (Max)

11-gal

Fish Type

Marine Fish, Tropical Freshwater