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
831
$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

4.7/5
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
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
692
$19.97Chewy Price
($3.33/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
3
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
623
$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

4.6/5
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
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
340
$56.99Chewy 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

4.5/5
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
324
$7.99Chewy Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.4/5
Great

Durability

4.7/5
Excellent

Effectiveness

4.5/5
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
Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count
Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count

Aqueon QuietFlow Large Replacement Filter Cartridges, 9 count

Rated 4.8 out of 5 stars
239
$29.95Chewy Price
($3.33/ea)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.6/5
Excellent

Durability

4.6/5
Excellent

Effectiveness

4.6/5
Excellent

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
7
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 4.6 out of 5 stars
84
$23.99Chewy Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.6/5
Excellent

Durability

4.6/5
Excellent

Effectiveness

4.6/5
Excellent

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
8
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
82
$7.99Chewy Price
($2.67/ea)

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
9
Penn-Plax Quick-Net Fish Tank Aquarium Catch Net, 4-in
Penn-Plax Quick-Net Fish Tank Aquarium Catch Net, 4-in
Penn-Plax Quick-Net Fish Tank Aquarium Catch Net, 4-in
Penn-Plax Quick-Net Fish Tank Aquarium Catch Net, 4-in
Penn-Plax Quick-Net Fish Tank Aquarium Catch Net, 4-in
Penn-Plax Quick-Net Fish Tank Aquarium Catch Net, 4-in
Penn-Plax Quick-Net Fish Tank Aquarium Catch Net, 4-in
Penn-Plax Quick-Net Fish Tank Aquarium Catch Net, 4-in

Penn-Plax Quick-Net Fish Tank Aquarium Catch Net, 4-in

Rated 4.6 out of 5 stars
131
$3.11Chewy Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.4/5
Great

Durability

4.3/5
Great

Effectiveness

4.4/5
Great

User-Friendliness

4.4/5
Great

Is this saltwater aquarium supply right for my pet?

Material

Mesh

Aquarium Type

Freshwater, Saltwater

Fish Type

Tropical Freshwater, Marine Fish
10
Python No Spill Clean & Fill Aquarium Maintenance System, 25-ft

Python No Spill Clean & Fill Aquarium Maintenance System, 25-ft

Rated 4.5 out of 5 stars
489
$56.49Chewy Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Compatibility

4.4/5
Great

Durability

4.4/5
Great

Effectiveness

4.6/5
Excellent

User-Friendliness

4.5/5
Great

Is this saltwater aquarium supply right for my pet?

Material

Plastic

Aquarium Type

Freshwater, Saltwater

Fish Type

Tropical Freshwater, Betta, Cichlid, Goldfish...