Marine & Freshwater

(82 results)
Fluval Aquaclear Aquarium Power Filter
4 sizes
(94)
$42.99 - $98.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® Plant Stratum Aquarium Substrate
(119)
$23.79
$28.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 2 more
Fluval® FX6 Aquarium Canister Filter
(198)
$369.99
$419.99
Save 15% when you spend $50+ on FREE Same-Day Delivery
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® 407 Performance Aquarium Canister Filter
(118)
$229.99
$269.99
Save 15% when you spend $50+ on FREE Same-Day Delivery
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® FX4 Aquarium Canister Filter
(125)
$309.99
$359.99
Save 15% when you spend $50+ on FREE Same-Day Delivery
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® 307 Performance Aquarium Canister Filter
(97)
$189.99
$199.99
Save 15% when you spend $50+ on FREE Same-Day Delivery
Free Same-Day Delivery, No Order Minimum!
+ 1 more
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® 207 Performance Aquarium Canister Filter
(81)
$169.99
Save 15% when you spend $50+ on FREE Same-Day Delivery
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval Plant & Shrimp Stratum
(8)
$46.49
$49.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 3 more
Fluval® Plant 3.0 Bluetooth LED
4 sizes
(58)
$154.99 - $274.99
Save 15% when you spend $50+ on FREE Same-Day Delivery
Free Same-Day Delivery, No Order Minimum!
+ 1 more
FLUVAL Active Carbon Insert 3-Pack
3 sizes
(8)
$6.99 - $12.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 3 more
Fluval® Pro-VAC Powered Aquarium Gravel Cleaner
(125)
$52.99
$58.99
Save 15% when you spend $50+ on FREE Same-Day Delivery
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® Submersible Aquarium Heater
(237)
$32.99 - $38.99
Save 15% when you spend $50+ on FREE Same-Day Delivery
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® AQUASKY LED Aquarium Light - 35 Watt
(46)
$179.99
Save 15% when you spend $50+ on FREE Same-Day Delivery
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® AQUASKY LED Aquarium Light - 18 Watt
(56)
$129.99
Save 15% when you spend $50+ on FREE Same-Day Delivery
Free Same-Day Delivery, No Order Minimum!
+ 1 more
FLUVAL AC BioMax Insert 1-Pack
3 sizes
(10)
$2.99 - $11.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 3 more
Fluval® UltraGrade Carbon
(10)
$8.99
$10.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 4 more
Fluval Bio-FX Biological Filter Media - 5 L
(4)
$22.99
$25.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 3 more
Fluval® Sea Mini Protein Skimmer
(10)
$38.99
$52.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 2 more
Fluval® AquaSky LED Aquarium Light - 12 Watt
(30)
$89.99
Save 15% when you spend $50+ on FREE Same-Day Delivery
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® AQUASKY LED Aquarium Light - 27 Watt
(28)
$149.99
Save 15% when you spend $50+ on FREE Same-Day Delivery
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® FX5 Filter Foam Inserts Aquarium Filter Media
(5)
$14.39
$17.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 4 more
FLUVAL Bio-Foam Filter Insert 1-Pack
4 sizes
(12)
$3.49 - $7.49
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 3 more
Fluval® Quick Clear Water Polishing Pad 306/307/406/407 6PK
(14)
$9.99
$10.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 4 more
Fluval AquaClear Clear-Carb Filter Media 2-Pack
(0)
$14.79
$15.59
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 2 more
Fluval AquaClear Series Power Filter
(6)
$37.99
$39.99
Sign In & Enjoy Free Shipping Over $49
Fluval FX2 Bio Foam Max
(0)
$15.79
$19.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 3 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® FX6 Service Kit
(1)
$52.99
$55.99
Sign In & Enjoy Free Shipping Over $49
Fluval® M-Series Submersible Heater
(150)
$30.99
$36.99
Save 15% when you spend $50+ on FREE Same-Day Delivery
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fluval® Bug Bites Tropical Flakes
(39)
$5.99
$9.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 3 more
Fluval Phosphate Resin Infused Pads
(4)
$8.29
$9.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 4 more
Fluval® FX5/FX6 Bio Foam 2 Pack
(4)
$15.99
$17.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 4 more
Fluval® FX5/FX6 Carbon Foam 2 Pack
(1)
$16.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 4 more
Fluval® SEA CP1 Circulation Pump
(2)
$23.99
$25.39
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 3 more
Fluval® Underwater 2 Filter
(24)
$34.99
$69.99
Sign In & Enjoy Free Shipping Over $49
Fluval® Underwater 3 Filter
(20)
$44.99
$74.99
Sign In & Enjoy Free Shipping Over $49
Fluval® BioMax Media
(20)
$14.59
$22.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 4 more
Fluval® Clearmax Phosphate Remover
(22)
$7.59
$9.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 4 more
Fluval® Zeo-Carb Filter Media
(14)
$6.09
$7.99
Save 35% On Your First Autoship Order!
Earn a 5,000-point Reward Certificate when you get your second Autoship delivery by 11/30
+ 4 more
  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.