Deals on fish & aquariums

Build your most beautiful underwater ecosystem yet

Marine & Freshwater

(173 results)
Hill's® Science Diet® Sensitive Stomach & Skin Adult Dry Dog Food - Chicken & Barley
4 sizes 1 flavor
(1752)
$23.99 - $97.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Sensitive Stomach & Skin Adult Wet Dog Food - Turkey & Rice, 12.5 oz
(742)
$4.09
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
Hill's Science Diet Perfect Weight Adult Dry Dog Food - Chicken
3 sizes 1 flavor
(1154)
$25.99 - $87.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Perfect Weight Adult Dry Cat Food - Chicken
3 sizes 1 flavor
(1471)
$24.99 - $65.99
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
Hill's Science Diet Perfect Weight & Joint Support Large Breed Adult Dry Dog Food - Chicken & Rice
(161)
$89.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Adult Dry Dog Food - Chicken & Barley
4 sizes 1 flavor
(1606)
$20.99 - $97.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Large Breed Adult Dry Dog Food - Chicken & Barley
3 sizes 1 flavor
(1189)
$49.99 - $97.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Large Breed Adult Dry Dog Food - Lamb & Brown Rice
(701)
$83.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Sensitive Stomach & Skin Adult Dry Cat Food - Chicken
3 sizes 1 flavor
(1331)
$23.99 - $63.99
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
Hill's® Science Diet® Small & Mini Adult Dry Dog Food - Chicken & Brown Rice
2 sizes 1 flavor
(1069)
$23.99 - $57.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Perfect Weight Adult Wet Dog Food - Vegetable & Chicken Stew, 12.5 oz
(682)
$4.19
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
Hill's® Science Diet® Urinary Hairball Control Adult Wet Cat Food - Minced, 5.5 oz
(380)
$2.69
$2.89
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
Hill's® Science Diet® Sensitive Stomach & Skin Adult Wet Dog Food - Chicken & Vegetable, 12.8 oz
(865)
$4.09
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
Hill's® Science Diet® Savory Stew Senior 7+ Wet Dog Food - Beef & Vegetable, 12.8 oz
(460)
$3.49
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
Hill's® Science Diet® Savory Stew Adult Wet Dog Food - Beef & Vegetable, 12.8 oz
(56)
$3.49
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
Hill's® Science Diet® Sensitive Stomach & Skin Large Breed Adult Dry Dog Food - Chicken & Barley
(319)
$83.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Perfect Digestion Adult Dry Dog Food - Salmon, Brown Rice & Whole Oats
3 sizes 1 flavor
(863)
$24.99 - $85.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Small Bites Adult Dry Dog Food - Chicken & Barley
4 sizes 1 flavor
(1288)
$20.99 - $97.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Senior 7+ Dry Dog Food - Chicken, Barley & Brown Rice
3 sizes
(853)
$20.99 - $80.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Sensitive Stomach & Skin Small Bites Adult Dog Dry Food - Chicken & Barley
3 sizes 1 flavor
(1252)
$23.99 - $83.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Urinary Hairball Control Adult Dry Cat Food - Chicken
3 sizes 1 flavor
(1001)
$24.99 - $66.99
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
Hill's Science Diet Large Breed Puppy Dry Dog Food - Chicken & Brown Rice
2 sizes 1 flavor
(714)
$49.99 - $74.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's Science Diet Adult Dog Dry Food - Salmon & Brown Rice Recipe
3 sizes
(84)
$21.99 - $83.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Indoor Adult Dry Cat Food - Chicken
3 sizes 1 flavor
(1600)
$21.99 - $60.99
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
Hill's® Science Diet® Large Breed Senior 6+ Dry Dog Food - Chicken Recipe
(657)
$80.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Adult Dry Cat Food - Chicken
3 sizes 1 flavor
(1245)
$21.99 - $60.99
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
Hill's® Science Diet® Perfect Weight Small & Mini Adult Dry Dog Food - Chicken Recipe
2 sizes 1 flavor
(1293)
$25.99 - $60.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Sensitive Stomach & Skin Small & Mini Adult Dog Dry Food - Chicken & Rice
2 sizes 1 flavor
(989)
$23.99 - $57.99
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 3 more
Hill's® Science Diet® Oral Care Adult Dry Cat Food - Chicken
2 sizes 1 flavor
(844)
$23.99 - $37.99
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
Hill's Science Diet Perfect Digestion Adult Wet Dog Food - Chicken, Vegetable & Rice Stew, 12.8 oz
(133)
$4.19
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
Hill's Science Diet Sensitive Stomach & Skin Adult Dog Wet Food - Chicken & Vegetable Stew, 12.5 oz
(46)
$4.09
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
Hill's® Science Diet® Healthy Cuisine Adult Wet Cat Food - Chunks & Gravy, 2.8 oz
(687)
$1.99
$2.19
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
Hill's® Science Diet® Sensitive Stomach & Skin Adult Wet Dog Food - Salmon & Vegetable, 12.8 oz
(317)
$4.09
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
Hill's® Science Diet® Adult Wet Dog Food - Chicken & Barley, 13 oz
(22)
$3.49
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
Hill's® Science Diet® Savory Stew Adult Wet Dog Food - Chicken & Vegetable, 12.8 oz
(270)
$3.49
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
Hill's® Science Diet® Savory Stew Senior 7+ Wet Dog Food - Chicken & Vegetable, 12.8 oz
(28)
$3.49
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
Hill's® Science Diet® Senior 7+ Wet Dog Food - Chicken & Barley, 13 oz
(458)
$3.49
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
Hill's® Science Diet® Small & Mini Adult Wet Dog Food - Chicken & Barley Entree, 5.8 oz
(213)
$2.49
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
Hill's® Science Diet® Adult Wet Dog Food - Beef & Barley, 13 oz
(391)
$3.49
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
Hill's Science Diet Healthy Cuisine Adult Wet Dog Food - Roasted Chicken, Carrots & Spinach, 12.5 oz
(788)
$3.89
Earn 5,000 points ($10 back in savings) when you spend $60+ on dog food.
Save 35% On Your First Autoship Order!
+ 2 more
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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.