Activate & earn 5,000 pts on $50+ FREE Same-Day Delivery order thru 4/2* >

Shop by Category

Tropical & Freshwater

(23 results)
API® Freshwater Aquarium Master Test Kit

API® Freshwater Aquarium Master Test Kit

(393)
$54.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Stress Coat Tap Water Aquarium Conditioner
4 sizes

API® Stress Coat Tap Water Aquarium Conditioner

(472)
$5.99 - $19.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Aquarium Salt

API® Aquarium Salt

(193)
$12.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Saltwater Aquarium Master Test Kit

API® Saltwater Aquarium Master Test Kit

(10)
$59.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® ACCU Clear Aquarium Water Clairifier
2 sizes

API® ACCU Clear Aquarium Water Clairifier

(305)
$10.99 - $16.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® 5 in 1 Aquarium Test Strips
2 sizes

API® 5 in 1 Aquarium Test Strips

(147)
$11.99 - $28.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Reef Aquarium Water Test Kit

API® Reef Aquarium Water Test Kit

(0)
$53.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Aqua Essential
2 sizes

API® Aqua Essential

(70)
$17.49 - $24.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Bottom Feeder Premium Shrimp Pellets Fish Food

API® Bottom Feeder Premium Shrimp Pellets Fish Food

(73)
$8.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Tropical Community Fish Flakes Fish Food
2 sizes

API® Tropical Community Fish Flakes Fish Food

(104)
$9.99 - $22.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Stress Zyme Aquarium Water Conditioner
2 sizes

API® Stress Zyme Aquarium Water Conditioner

(91)
$21.99 - $29.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® pH Down Adjuster Aquarium Water Conditioner

API® pH Down Adjuster Aquarium Water Conditioner

(26)
$10.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® pH Up Adjuster Freshwater Aquarium Water Conditioner

API® pH Up Adjuster Freshwater Aquarium Water Conditioner

(22)
$10.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Ammo Lock

API® Ammo Lock

(30)
$18.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Proper pH 7.0 Aquarium Water pH Conditioner

API® Proper pH 7.0 Aquarium Water pH Conditioner

(68)
$18.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Freshwater Aquarium Mini pH Test Kit

API® Freshwater Aquarium Mini pH Test Kit

(12)
$9.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Accu-Clear Clarifier Pond Water Conditioner

API® Accu-Clear Clarifier Pond Water Conditioner

(2)
$29.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Marine Reef Aquarium Magnesium Solution

API® Marine Reef Aquarium Magnesium Solution

(0)
$20.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
API® Marine Stress Zyme

API® Marine Stress Zyme

(5)
$22.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Tropical Mini Pellets Fish Food

API® Tropical Mini Pellets Fish Food

(28)
$13.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Marine Complete Trace

API® Marine Complete Trace

(2)
$22.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Marine Calcium

API® Marine Calcium

(4)
$22.99
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
API® Stress Zyme

API® Stress Zyme

(2)
$5.49
Online Only! Save 20% on regular priced small pet, bird, reptile & aquatic products. Discount in cart.
Earn 5,000 points ($10 back in savings) when you place a $50+ Free Same Day Delivery order. One-time use only.
+ 3 more
  1. 1
Download on the App StoreDownload on the Google Play Store
Copyright © 2026 PetSmart LLC
RecallsTerms of Use Privacy Policy Interest-Based Ads Canada Modern Slavery Act
*See Promotional Terms Page for details. Exclusions may apply. While supplies last. Prices & selection may vary by store & online.