Water, Care & Conditioning

(51 results)
Top Fin® Pre-Conditioned Aquarium Water
2 sizes
(214)
$19.99
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Seachem® Prime® Aquarium Water Conditioner
3 sizes
(357)
$7.99 - $17.99
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API® Stress Coat Tap Water Aquarium Conditioner
4 sizes
(351)
$5.99 - $19.99
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Seachem® Stability® New Tank Stabilization System Aquarium Water Conditioner
2 sizes
(190)
$12.99 - $17.99
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API® Aquarium Salt
(185)
$12.99
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Top Fin® Pre-Conditioned Betta Aquarium Water
(40)
$6.99
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Top Fin® Aquarium Water Conditioner
3 sizes
(237)
$7.99 - $17.99
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Top Fin® Aquarium Readistart Nitrifying Bacteria Starter
2 sizes
(169)
$11.99 - $19.99
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API® ACCU Clear Aquarium Water Clairifier
2 sizes
(293)
$10.99 - $16.99
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API® Stress Zyme Aquarium Water Conditioner
(89)
$21.99
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API® Aqua Essential
2 sizes
(66)
$17.49 - $24.99
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Tetra® EasyBalance Nitraban Aquarium Water Treatment
(148)
$20.99
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Top Fin® Betta Aquarium Water Conditioner
2 sizes
(126)
$7.99 - $8.99
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Natural Rapport Aquarium Gravel Cleaner
(16)
$20.99
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Seachem® Matrix™
(20)
$10.99
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Thrive Turtle Water Cleaner
(18)
$10.99
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Top Fin® Aquarium Biological Cleaner
2 sizes
(56)
$8.99 - $24.99
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Tetra® AquaSafe Plus Aquarium Dechlorinator Water Conditioner
2 sizes
(192)
$13.99 - $22.99
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API Chlorine & Heavy Metal Neutralizer Pond water Conditioner
(0)
$44.99
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API Pond Aqua Essential
(0)
$29.99
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API Stress Zyme Water Conditioner
(8)
$12.99
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Aqueon AquaPacs Water Conditioner
(34)
$11.99
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+ 1 more
Top Fin® All-in-One Water Conditioner
(6)
$9.99
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Natural Rapport Aquarium All-In-1 Water Conditioner
(14)
$22.99
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Fritz Bactershield Bio-Adhesive Supplement
(12)
$19.99
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Top Fin® Freshwater Aquarium Starter Kit
(50)
$17.99
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Aqueon® Pure Bacteria Supplement
(47)
$13.99
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Thrive Turtle Water Cleaner
(8)
$10.99
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Top Fin® Instant Ammonia Aquarium Neutralizer
(12)
$12.99
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Top Fin® Aquarium Water Clarifier
2 sizes
(142)
$9.99 - $14.99
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Seachem® Marine Buffer
(2)
$14.99
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Fluval® Aquarium Water Conditioner
3 sizes
(14)
$9.49 - $21.99
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Fluval® Biological Aquarium Enhancer
2 sizes
(12)
$13.99 - $21.99
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Fluval® Biological Aquarium Cleaner
(0)
$22.99
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Nutrafin Aqua-Care Value Pack with Aqua Plus, Cycle & Waste Control
(8)
$21.99
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Tetra® SafeStart Aquarium Cycling Water Conditioner
(163)
$12.99
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Aqueon® Betta Bowl Plus Aquarium Water Conditioner
(21)
$8.99
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Nutrafin® Betta Starter Kit
(2)
$18.99
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Buy 1, get 2nd 25% off all fish food
+ 3 more
Nutrafin® Waste Control Biological Aquarium Cleaner
2 sizes
(10)
$17.99 - $32.99
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Nutrafin® Cycle® Biological Aquarium Supplement
3 sizes
(24)
$11.99 - $23.86
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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.