SAVE 20% on regular-priced items online with code: PETS20 thru 4/26* >

Fish Sale

(13 results)
Seachem® Prime® Aquarium Water Conditioner
3 sizes

Seachem® Prime® Aquarium Water Conditioner

(375)
$7.99 - $17.99
Online only! 20% off regular price items with code PETS20 thru 4/26, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Seachem® Stability® New Tank Stabilization System Aquarium Water Conditioner
2 sizes

Seachem® Stability® New Tank Stabilization System Aquarium Water Conditioner

(206)
$12.99 - $17.99
Online only! 20% off regular price items with code PETS20 thru 4/26, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Seachem® Purigen® Premium Synthetic Absorbent
2 sizes

Seachem® Purigen® Premium Synthetic Absorbent

(60)
$18.99 - $19.99
Online only! 20% off regular price items with code PETS20 thru 4/26, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Seachem® Flourish Excel™

Seachem® Flourish Excel™

(10)
$15.99
Online only! 20% off regular price items with code PETS20 thru 4/26, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Seachem® Matrix™

Seachem® Matrix™

(20)
$10.99
Online only! 20% off regular price items with code PETS20 thru 4/26, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Seachem Flourish Potassium™

Seachem Flourish Potassium™

(6)
$15.99
Online only! 20% off regular price items with code PETS20 thru 4/26, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Seachem® Clarity™

Seachem® Clarity™

(18)
$17.99
Online only! 20% off regular price items with code PETS20 thru 4/26, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Seachem® Alert Combo™ Aquarium pH & Ammonia Detector

Seachem® Alert Combo™ Aquarium pH & Ammonia Detector

(80)
$20.99
Online only! 20% off regular price items with code PETS20 thru 4/26, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Seachem® PhosGuard™

Seachem® PhosGuard™

(3)
$11.99
Online only! 20% off regular price items with code PETS20 thru 4/26, see terms*
Sign in & Save 25% on your first Autoship Order!
+ 2 more
Seachem® Marine Buffer

Seachem® Marine Buffer

(2)
$14.99
Online only! 20% off regular price items with code PETS20 thru 4/26, see terms*
Enjoy Free Same-day delivery!
+ 1 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.