• $0 - $50+


Water, Care & Conditioning

(72 results)
Top Fin® Aquarium Water Conditioner
4 sizes
(226)
$4.19 - $9.99
API® Aquarium Salt
4 sizes
(180)
$8.79
-
$157.49
Seachem® Matrix™
4 sizes
(15)
$6.89
-
$35.09
API® Aqua Essential
3 sizes
(56)
$8.69
-
$15.89
Top Fin® Aquarium Water Clarifier
3 sizes
(136)
$5.59
-
$7.29
Top Fin® Aquarium Biological Cleaner
3 sizes
(50)
$7.99
-
$14.99
Seachem® Stability®
3 sizes
(6)
$48.19 - $77.09
Seachem® Prime®
3 sizes
(4)
$59.99
-
$88.99
API® Algaefix Aquarium Algae Control
4 sizes
(239)
$9.49
-
$16.99
API® Ammo Lock
2 sizes
(20)
$10.99
Cobalt™AquaClarify
3 sizes
(0)
$12.29 - $22.09
Cobalt™ pH Buffer 9.4
2 sizes
(0)
$22.29
$38.89
Cobalt™ pH Minus
3 sizes
(0)
$10.29 - $17.09
Cobalt™American Trace
3 sizes
(0)
$18.39
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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.