Water, Care & Conditioning

(77 results)
Top Fin® Pre-Conditioned Aquarium Water
2 sizes
(214)
$13.99 - $14.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
Seachem® Prime® Aquarium Water Conditioner
4 sizes
(357)
$3.79 - $16.69
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
API® Stress Coat Tap Water Aquarium Conditioner
6 sizes
(351)
$2.29 - $40.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Seachem® Stability® New Tank Stabilization System Aquarium Water Conditioner
2 sizes
(190)
$3.99 - $8.39
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
API® Quick Start Aquarium Cycling Water Conditioner
3 sizes
(144)
$8.99 - $17.39
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
API® Aquarium Salt
3 sizes
(185)
$8.99 - $112.49
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Top Fin® Pre-Conditioned Betta Aquarium Water
(40)
$3.49
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Top Fin® Aquarium Water Conditioner
3 sizes
(237)
$4.19 - $9.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Top Fin® Aquarium Readistart Nitrifying Bacteria Starter
2 sizes
(169)
$7.29 - $10.49
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
API® ACCU Clear Aquarium Water Clairifier
2 sizes
(295)
$5.59 - $9.49
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Tetra® EasyBalance Nitraban Aquarium Water Treatment
(148)
$13.49
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
API® Stress Zyme Aquarium Water Conditioner
2 sizes
(89)
$10.59 - $59.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
API® Aqua Essential
2 sizes
(66)
$8.69 - $15.89
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Seachem® Prime®
2 sizes
(5)
$53.29 - $88.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 1 more
Tetra® AquaSafe Plus Aquarium Dechlorinator Water Conditioner
3 sizes
(192)
$6.09 - $16.59
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Top Fin® Betta Aquarium Water Conditioner
2 sizes
(126)
$3.49 - $5.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Natural Rapport Aquarium Gravel Cleaner
(16)
$15.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Seachem® Matrix™
3 sizes
(20)
$6.19 - $35.09
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 4 more
Top Fin® Freshwater Aquarium Starter Kit
(50)
$14.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Thrive Turtle Water Cleaner
(18)
$8.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship of Reptile Food & Supplements
+ 3 more
Top Fin® Instant Ammonia Aquarium Neutralizer
(13)
$8.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Top Fin® Aquarium Biological Cleaner
2 sizes
(56)
$7.99 - $16.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Seachem® Stability®
2 sizes
(8)
$51.39 - $77.09
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 1 more
Fritz ProAquatics Reef Pro Mix Marine Salt
(6)
$18.09
$29.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 1 more
Tetra® SafeStart Aquarium Cycling Water Conditioner
(163)
$10.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
API® Pond Algaefix
(14)
$24.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
API® Algaefix Aquarium Algae Control
3 sizes
(251)
$9.49 - $16.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
API® Tap Water Conditioner Super Strength Aquarium Dechlorinator
3 sizes
(40)
$4.79 - $40.59
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 1 more
API® Ammo Lock
(26)
$10.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
API® Proper pH 7.0 Aquarium Water pH Conditioner
(62)
$11.49
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
TetraPond GreenFree UV Clarifier
2 sizes
(0)
$176.19 - $364.49
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 1 more
API Chlorine & Heavy Metal Neutralizer Pond water Conditioner
(0)
$27.69
$33.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
API Pond Aqua Essential
(0)
$23.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
API Stress Zyme Water Conditioner
(8)
$5.89
$6.49
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Aqueon AquaPacs Water Conditioner
(34)
$7.99
$9.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 35% On Your First Autoship Order!
+ 2 more
Top Fin® All-in-One Water Conditioner
(6)
$8.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Aqueon® Water Conditioner
(22)
$10.99
$13.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 1 more
Natural Rapport Aquarium All-In-1 Water Conditioner
(14)
$16.99
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
Fritz Bactershield Bio-Adhesive Supplement
(12)
$12.79
$16.49
Online Only! Buy any Habitat, Save 20% on food and care
Save 40% on your first Autoship Order!
+ 2 more
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Keeping your pet fish’s tank in great shape involves using the right aquarium water care and conditioning products. In order to keep the water in your aquarium in great condition, you will occasionally need to purchase these products so your fish can live their best life. Pet parents can find the aquarium water care, aquarium water conditioner, and other aquarium supplies they need at PetSmart. 
Our collection of aquarium water care and conditioner supplies includes products like: 
Aquarium Water Conditioner
Pre-Conditioned Water
Aquarium Salt
Fish Tank Water Clarifier
Turtle Tank Water Cleaner
Algae Control
Ammonia Remover Pads
Bacteria Supplements
Fish Tank Dechlorinator
Fresh Water Starter Kits
Goldfish Minerals
And More
You are sure to find the exact fish tank water supplies you need at PetSmart. Need something else for your pet fish while you’re here? We sell fish disease treatment, fish foodfish feedersfish tank plant carefish pond caresaltwater aquarium carefish tank water quality testers, and more
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 what items are eligible.