Marine & Freshwater

(83 results)
Fluval® FX6 Aquarium Canister Filter
(198)
$369.99
$419.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval Aquaclear Aquarium Power Filter
4 sizes
(84)
$42.99 - $99.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® Plant Stratum Aquarium Substrate
(119)
$23.69
$28.99
Buy any tank get 20% off entire stock substrate (excludes Gems)
Sign In & Enjoy Free Shipping Over $49
Fluval FX2 Aquarium Canister Filter
(32)
$269.99
$319.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® 407 Performance Aquarium Canister Filter
(118)
$229.99
$269.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® FX4 Aquarium Canister Filter
(123)
$309.99
$359.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® 307 Performance Aquarium Canister Filter
(95)
$189.99
$199.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® 207 Performance Aquarium Canister Filter
(79)
$152.99
$159.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval Plant & Shrimp Stratum
(6)
$47.39
$49.99
Buy any tank get 20% off entire stock substrate (excludes Gems)
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® Plant 3.0 Bluetooth LED
4 sizes
(58)
$149.99 - $269.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® Submersible Aquarium Heater
(235)
$32.99 - $38.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® AQUASKY LED Aquarium Light - 35 Watt
(46)
$161.99
$179.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
FLUVAL Active Carbon Insert 3-Pack
3 sizes
(8)
$6.99 - $12.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® Pro-VAC Powered Aquarium Gravel Cleaner
(125)
$52.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® AQUASKY LED Aquarium Light - 18 Watt
(56)
$116.99
$129.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® AQUASKY LED Aquarium Light - 27 Watt
(28)
$134.99
$149.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
FLUVAL AC BioMax Insert 1-Pack
3 sizes
(8)
$4.59 - $9.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® Quick Clear Water Polishing Pad 306/307/406/407 6PK
(12)
$9.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® UltraGrade Carbon
(10)
$9.49
$10.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval AquaClear Series Power Filter
(6)
$39.99
Sign In & Enjoy Free Shipping Over $49
Fluval® FX5 Filter Foam Inserts Aquarium Filter Media
(5)
$17.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
FLUVAL Bio-Foam Filter Insert 1-Pack
4 sizes
(6)
$2.99 - $8.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval FX2 Bio Foam Max
(0)
$11.99
$19.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval Bio-FX Biological Filter Media - 5 L
(4)
$22.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® Marine Nano LED Light w/Bluetooth
(6)
$109.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® Sea Mini Protein Skimmer
(10)
$39.99
$52.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® FX6 Service Kit
(1)
$53.59
$55.99
Sign In & Enjoy Free Shipping Over $49
Fluval® M-Series Submersible Heater
(149)
$30.99
$36.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® AquaSky LED Aquarium Light - 12 Watt
(30)
$89.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval Phosphate Resin Infused Pads
(2)
$8.49
$9.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® 207/307 & 206/306 Bio-Foam Max Filter Pad - 2pk
(6)
$3.99
$7.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® FX5/FX6 Bio Foam 2 Pack
(4)
$15.99
$16.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® FX5/FX6 Carbon Foam 2 Pack
(1)
$16.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® SEA CP1 Circulation Pump
(2)
$23.99
$25.39
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® BioMax Media
(20)
$15.59
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® Clearmax Phosphate Remover
(22)
$7.59
$9.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® Zeo-Carb Filter Media
(14)
$6.09
$7.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® Pre-Filter Premium Mechanical Aquarium Filtration - 750g
(2)
$6.99
$15.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval AC Series Intake Strainer Sponge
2 sizes
(0)
$1.99 - $2.99
Buy 1 Get 2nd 50% Off all Aquatic Media
Sign In & Enjoy Free Shipping Over $49
Fluval AquaClear Clear-Carb Filter Media 1-Pack
2 sizes
(0)
$6.49 - $7.49
Buy 1 Get 2nd 50% Off all Aquatic Media
Sign In & Enjoy Free Shipping Over $49
  1. 1
  2. 2
  3. 3

Explore Our Extensive Range of Fish Supplies 

At PetSmart, we offer a comprehensive selection of supplies for both freshwater and marine fish enthusiasts. Whether you're setting up a new aquarium or maintaining an existing one, our range of products ensures your aquatic pets thrive. From aquarium decor to essential maintenance tools, find everything you need to create a vibrant underwater world. 

Freshwater and Marine Fish Supplies 

Our collection includes a variety of aquarium accessories and pet fish supplies designed to cater to the unique needs of both freshwater and marine environments. Explore our selection of aquarium decor to enhance the beauty of your tank, and discover top-quality marine aquarium supplies to support the health of your aquatic life. 

Essential Aquarium Maintenance 

Maintaining a healthy aquarium requires the right tools and knowledge. Our range of aquarium maintenance products includes everything from filters to water conditioners, ensuring your tank remains a safe and clean environment for your fish. Learn how to maintain pH levels and keep your aquarium filter running efficiently with our expert tips. 

Frequently Asked Questions (FAQs) 

What maintenance does a fish tank need? 
Regular maintenance is crucial for a healthy aquarium. This includes cleaning the tank, changing the water, and checking the filter and pH levels. 
Can I put tap water in my fish tank? 
Tap water can be used in your fish tank, but it should be treated with a water conditioner to remove harmful chemicals like chlorine. 
Should an aquarium filter be on all the time? 
Yes, an aquarium filter should run continuously to maintain water quality and provide a healthy environment for your fish. 
How to maintain pH level in an aquarium? 
To maintain the pH level in your aquarium, regularly test the water and use pH adjusters as needed. Consistent water changes also help stabilize pH levels.