• $0 - $50+


Seachem

(43 results)
Seachem® Prime® Aquarium Water Conditioner
4 sizes
(359)
$3.79 - $16.69
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Seachem® Stability® New Tank Stabilization System Aquarium Water Conditioner
2 sizes
(190)
$3.99 - $8.39
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Seachem® Purigen® Premium Synthetic Absorbent
2 sizes
(54)
$9.19 - $15.69
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+ 4 more
Seachem® Matrix™
3 sizes
(20)
$5.29 - $35.09
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+ 4 more
Seachem® Flourish Excel™
(10)
$7.89
$11.99
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Seachem® The Bag ™ Welded Filter
(4)
$6.07
$9.99
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Seachem® Clarity™
(16)
$8.69
$14.99
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Seachem® Purigen®
(10)
$62.99
$115.31
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+ 2 more
Seachem® Stability®
2 sizes
(8)
$54.99 - $77.09
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Seachem® Alert Combo™ Aquarium pH & Ammonia Detector
(76)
$15.49
$18.99
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Seachem® Reef Strontium™
(0)
$7.09
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Seachem® Reef Iodide™
2 sizes
(0)
$8.39 - $10.19
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Seachem® Reef Advantage Magnesium™
2 sizes
(0)
$6.09 - $22.79
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Seachem® Reef Plus™
2 sizes
(0)
$7.29 - $10.69
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Seachem® Reef Buffer™
2 sizes
(0)
$7.19 - $21.00
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Seachem® Reef Fusion 2™
2 sizes
(0)
$8.59 - $20.19
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Seachem® Reef Fusion 1™
2 sizes
(0)
$8.59 - $12.99
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Seachem® Reef Status Calcium Kit
(0)
$34.49
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Seachem® Reef Carbonate™
2 sizes
(0)
$6.39 - $6.89
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SeaChem Reef Complete Marine Care
(0)
$7.09
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Seachem® PhosGuard™
(3)
$4.89
$7.69
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Seachem® CupriSorb™ - Copper & Heavy Metal Absorbent
(0)
$6.99
$14.99
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Seachem® Matrix Carbon™
(0)
$6.07
$9.99
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Seachem Flourish Potassium™
(6)
$9.39
$11.99
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Seachem® Flourish Excel™
2 sizes
(2)
$36.49 - $66.79
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Seachem® Flourish®
(4)
$36.49
$39.89
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Seachem® Prime®
2 sizes
(5)
$52.99 - $88.99
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Seachem® Phosguard™
2 sizes
(4)
$32.30 - $60.99
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Seachem® Cichlid Lake Salt™
(0)
$23.89
$41.06
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Seachem® Tidal™ 75 Zeolite Filter Pouch
(0)
$8.19
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Seachem® Tidal™ 110 MatrixCarbon
(0)
$17.79
$20.99
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Seachem® Tidal™ 75 Matrix Carbon
(0)
$10.19
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Seachem® Tidal Matrix™
(0)
$7.69
$12.29
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Seachem® Tidal Matrix™
(2)
$7.69
$11.29
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Seachem® Tidal ™
(0)
$9.99
$16.88
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Seachem® Tidal ™
(0)
$6.99
$10.99
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Seachem® Tidal ™
(0)
$9.99
$11.69
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+ 3 more
Seachem® Marine Buffer™
(0)
$23.19
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+ 2 more
Seachem® Reef Complete™
(0)
$10.59
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+ 2 more
Seachem® Tidal™ Zeolite
(0)
$13.49
$14.99
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Keep your fish feeling their best with the many different Seachem® aquarium products that are available at PetSmart. Whether you’re looking for water conditioners, plant substrates, stability systems, filters or more, we have what you need. Choosing the right supplies for your aquarium set-up can feel overwhelming with so many different options out there. When you choose Seachem products to create your fishes’ home, you can be confident in your decision. 
PetSmart’s selection of other brands and options of aquarium supplies includes:
You can find what you’re looking for to keep your fish living a happy and healthy life at PetSmart. Need other aquarium supplies while you’re here? We have you covered. 
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.