Salt Water Aquarium Care

(40 results)
Nature's Ocean Live Nutri-Seawater
(32)
$20.50
$25.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
API® Aquarium Salt
3 sizes
(193)
$8.78 - $112.48
Buy 1 Get the 2nd 25% OFF Select API Food & Water Care! (excluding Pond)
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Instant Ocean® Sea Salt
2 sizes
(85)
$22.39 - $59.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Instant Ocean® Reef Crystals Aquarium Reef Salt
2 sizes
(66)
$25.99 - $79.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fluval® Sea Mini Protein Skimmer
(11)
$38.89
$52.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Instant Ocean Reef Crystals Reef Salt 200 Gal
(1)
$84.99
$99.69
Sign In & Enjoy Free Shipping Over $49
API® Reef Aquarium Water Test Kit
(0)
$35.98
$50.48
Buy 1 Get the 2nd 25% OFF Select API Food & Water Care! (excluding Pond)
Free Same-Day Delivery, No Order Minimum!
+ 1 more
API® Saltwater Aquarium Master Test Kit
(10)
$35.98
$35.99
Buy 1 Get the 2nd 25% OFF Select API Food & Water Care! (excluding Pond)
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 CP1 Circulation Pump
(4)
$23.09
$25.39
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Seachem® Clarity™
(16)
$8.69
$14.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Instant Ocean® Hydrometer
(10)
$11.99
$14.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Instant Ocean Sea Salt 200 Gal
(0)
$69.09
$81.29
Sign In & Enjoy Free Shipping Over $49
Seachem® Reef Strontium™
(0)
$7.03
Sign In & Enjoy Free Shipping Over $49
Seachem® Reef Iodide™
2 sizes
(0)
$7.00 - $10.19
Sign In & Enjoy Free Shipping Over $49
Seachem® Reef Advantage Magnesium™
2 sizes
(0)
$6.09 - $12.85
Sign In & Enjoy Free Shipping Over $49
Seachem® Reef Plus™
2 sizes
(0)
$7.24 - $10.61
Sign In & Enjoy Free Shipping Over $49
Seachem® Reef Buffer™
2 sizes
(0)
$7.12 - $21.00
Sign In & Enjoy Free Shipping Over $49
Seachem® Reef Fusion 2™
2 sizes
(0)
$8.50 - $12.99
Sign In & Enjoy Free Shipping Over $49
Seachem® Reef Fusion 1™
2 sizes
(0)
$8.50 - $12.99
Sign In & Enjoy Free Shipping Over $49
Seachem® Reef Status Calcium Kit
(0)
$34.22
Sign In & Enjoy Free Shipping Over $49
Seachem® Reef Carbonate™
2 sizes
(0)
$4.52 - $6.89
Sign In & Enjoy Free Shipping Over $49
SeaChem Reef Complete Marine Care
(0)
$7.03
Sign In & Enjoy Free Shipping Over $49
API® Marine Reef Aquarium Magnesium Solution
(0)
$12.98
$18.28
Buy 1 Get the 2nd 25% OFF Select API Food & Water Care! (excluding Pond)
Omega One™ Garlic Marine Slow-Sinking Mini Pellets
(1)
$4.84
$5.69
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Omega One™ Garlic Marine Flakes
(1)
$5.43
$6.49
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
Fritz ProAquatics Reef Pro Mix Marine Salt
(6)
$25.49
$29.99
Sign In & Enjoy Free Shipping Over $49
Seachem® Marine Buffer™
(0)
$21.00
$42.34
Sign In & Enjoy Free Shipping Over $49
API® Pimafix®
(50)
$46.09
$64.59
Sign In & Enjoy Free Shipping Over $49
API® Marine Quick Start
(12)
$19.98
$19.99
Buy 1 Get the 2nd 25% OFF Select API Food & Water Care! (excluding Pond)
Free Same-Day Delivery, No Order Minimum!
+ 1 more
API® Marine Stress Zyme
(5)
$15.48
$21.78
Buy 1 Get the 2nd 25% OFF Select API Food & Water Care! (excluding Pond)
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Omega™ One Super Veggie Seaweed
2 colors
(14)
$8.77 - $8.79
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
API® Marine Melafix
(4)
$12.48
$17.48
Buy 1 Get the 2nd 25% OFF Select API Food & Water Care! (excluding Pond)
Free Same-Day Delivery, No Order Minimum!
+ 1 more
API® Marine Complete Trace
(2)
$12.98
$18.28
Buy 1 Get the 2nd 25% OFF Select API Food & Water Care! (excluding Pond)
Free Same-Day Delivery, No Order Minimum!
+ 1 more
API® Marine Calcium
(4)
$12.98
$18.28
Buy 1 Get the 2nd 25% OFF Select API Food & Water Care! (excluding Pond)
Free Same-Day Delivery, No Order Minimum!
+ 1 more
API® Algaefix Marine Aquarium Algaecide
(12)
$18.98
$26.48
Buy 1 Get the 2nd 25% OFF Select API Food & Water Care! (excluding Pond)
Free Same-Day Delivery, No Order Minimum!
+ 1 more
API® Marine Stress Coat
(4)
$10.98
$17.99
Buy 1 Get the 2nd 25% OFF Select API Food & Water Care! (excluding Pond)
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Omega™ One Marine Garlic Pellets Fish Food
(20)
$11.72
$13.99
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
KENT Marine® Coral-Vite
(0)
$10.99
$17.99
Sign In & Enjoy Free Shipping Over $49
Tetra® Marine Saltwater Flakes Fish Food
(4)
$13.99
Sign In & Enjoy Free Shipping Over $49
  1. 1
PetSmart has saltwater aquarium supplies on sale! Help your finned friends live their best life by maintaining a clean tank. With saltwater aquarium and fish supplies on sale at PetSmart, you can create a habitat that's clean and beautiful. Pet parents can find everything they need to care for their saltwater fish at PetSmart. Shop our newest selection of saltwater aquarium supplies on sale for special savings on skimmers, saltwater liquid concentrates, seaweed, reef crystals, reef supplements and more.
 
Stock up and save on a variety of other fish care supplies, such as:
 
 
Looking for other discounted fish supplies? Stop by your local PetSmart or shop online to find great deals on everything you need to care for your freshwater or saltwater fish. 

PetSmart also offers convenient shopping with curbside or in-store pickup. Need something today? We have select items available for same-day delivery in most areas powered by DoorDash. For items you purchase frequently, PetSmart has Autoship that automatically delivers the items you want to your door as often as you’d like. Check the website to see which items are eligible.