Black Friday Fish deals

Valid thru 11/30

Marine & Freshwater

(37 results)
Tetra® Whisper Bio-Bag Disposable Filter Cartridge
2 sizes
(148)
$6.49 - $14.59
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
BOGO 50% Off All Aquatic Media
+ 3 more
Tetra® TetraMin Tropical Flakes Fish Food
4 sizes
(285)
$3.89 - $47.89
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 2 more
Tetra® Whisper IQ Power Aquarium Filter
5 sizes
(324)
$25.39 - $52.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Tetra® Whisper Aquarium Air Pump
4 sizes
(303)
$17.39 - $34.69
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Tetra HT Submersible Aquarium Heater
(491)
$15.27 - $23.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Tetra® 6 N 1 Aquarium Water Test Strips
(69)
$9.99
$11.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 2 more
TetraPro™ Tropical Crisps Fish Food Flakes
2 sizes
(73)
$7.99 - $16.49
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 2 more
Tetra® Whisper In Tank Power Aquarium Filters
(180)
$15.99
$23.39
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Tetra® AquaSafe Plus Aquarium Dechlorinator Water Conditioner
3 sizes
(170)
$6.39 - $17.29
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 2 more
Tetra® Aquarium Lifeguard Halo Shield All-In-One-Treatment
(65)
$6.09
$16.49
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 2 more
Tetra® Whisper Bio Bag 20-60 Filter Cartridges
2 sizes
(70)
$6.49 - $7.29
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
BOGO 50% Off All Aquatic Media
+ 3 more
Tetra BIO-Bag® Aquarium Cartridges
2 sizes
(48)
$3.59 - $12.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
BOGO 50% Off All Aquatic Media
+ 3 more
Tetra® SafeStart Aquarium Cycling Water Conditioner
(106)
$10.49
$10.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 2 more
Tetra® EasyBalance Nitraban Aquarium Water Treatment
(69)
$13.87
$13.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 2 more
Tetra® Whisper In Tank Power Aquarium Filters
(34)
$26.19
$32.79
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Tetra® TetraColor Tropical Fish Flakes
2 sizes
(175)
$7.99 - $14.89
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 2 more
Tetra Whisper Bio Bag Filter Media 6 ct
(0)
$9.49
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
BOGO 50% Off All Aquatic Media
+ 2 more
TetraPro™ Tropical Color Crisps Fish Food Flakes
(88)
$3.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 2 more
Tetra® Pond Water Garden Pump Pre-Filter
(2)
$11.39
$15.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
BOGO 50% Off All Aquatic Media
+ 2 more
Tetra® Pond Tubing
(2)
$18.99
$20.59
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 1 more
Tetra® Pond Waterfall Filter
(7)
$64.99
$119.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Sign In & Enjoy Free Shipping Over $49
Tetra® Pond Submersible Flat Box Filter
(2)
$17.99
$31.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Sign In & Enjoy Free Shipping Over $49
Tetra® Pond Telescoping Pond Net
(0)
$15.99
$27.49
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 1 more
Tetra® Pond Decorative Water Lily
(4)
$3.89
$5.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Sign In & Enjoy Free Shipping Over $49
Tetra® Pond Filtration Fountain Kit
(3)
$76.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Sign In & Enjoy Free Shipping Over $49
Tetra® Pro Pleco Wafers Algae Eaters Fish Food
(28)
$3.99
$11.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 1 more
Tetra® Quick Dip Aquarium Water Test Kit
(8)
$6.79
$18.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 1 more
Tetra® TetraVacation™ Slow Release Tropical Fish Feeder
(60)
$3.69
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 1 more
Tetra® TetraWeekend Slow Release Tropical Fish Feeder
(69)
$3.89
$5.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 2 more
Tetra® Whisper 3i In Tank Filter
(88)
$12.89
$18.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Sign In & Enjoy Free Shipping Over $49
Tetra® Aquarium Algae Control
(22)
$6.49
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 1 more
Tetra® WaterClarifier Aquarium Water Clarifier
(88)
$8.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 2 more
Tetra® Whisper In Tank Power Aquarium Filters
(39)
$34.99
$42.29
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Sign In & Enjoy Free Shipping Over $49
Tetra® TetraColor Tropical Granules Fish Food
(4)
$7.19
$13.09
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 1 more
Tetra® Marine Saltwater Flakes Fish Food
(4)
$13.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 1 more
Tetra® TetraPond ClearChoice PF-1 Biofiliter Replacement Pad
(2)
$13.59
$18.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
BOGO 50% Off All Aquatic Media
+ 2 more
Tetra® TetraColor Tropical Fish Flakes
(113)
$4.39
$4.99
Earn 10,000 points PER DAY ($20 back in savings) when you spend $100+ on merchandise and services.
Save 35% On Your First Autoship Order!
+ 2 more
  1. 1

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.