• $0 - $50+


Disease Treatment

(17 results)
API® E.M. Erythromycin Fish Bacterial Infection Treatment
(74)
$17.89
$26.49
Extra 20% off online only with code SAVE20, see terms.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
API® Guide Fish Problem Solving General Cure
(60)
$16.39
$23.49
Extra 20% off online only with code SAVE20, see terms.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
API® Melafix Fish Bacterial Infection Treatment
(190)
$14.39
$16.99
Extra 20% off online only with code SAVE20, see terms.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
API® FIN & BODY CURE POWDER
(62)
$16.39
$17.99
Extra 20% off online only with code SAVE20, see terms.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
API® Liquid Super Ick Cure
(151)
$6.99
Extra 20% off online only with code SAVE20, see terms.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
API® Bettafix Freshwater Fish Bacterial Infection Treatment
(130)
$4.99
Extra 20% off online only with code SAVE20, see terms.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fritz Maracyn Oxy
(14)
$10.39
$14.99
Extra 20% off online only with code SAVE20, see terms.
Save 35% On Your First Autoship Order!
+ 2 more
Kordon® Methylene Blue
(0)
$84.49
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Kordon® Rid Ich Plus Treatment
(0)
$32.99
$51.39
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Tetra® Aquarium Lifeguard Halo Shield All-In-One-Treatment
(135)
$6.09
$16.49
Free Same-Day Delivery, No Order Minimum!
Sign In & Enjoy Free Shipping Over $49
API® Pimafix Fish Fungal Infection Treatment
2 sizes
(94)
$9.09 - $12.09
Extra 20% off online only with code SAVE20, see terms.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Fritz Copper Safe
(0)
$10.39
$10.79
Extra 20% off online only with code SAVE20, see terms.
Save 35% On Your First Autoship Order!
+ 2 more
Top Fin® Ick Remedy
(49)
$11.99
Extra 20% off online only with code SAVE20, see terms.
Free Same-Day Delivery, No Order Minimum!
+ 1 more
Kordon® Rid Ich Plus Treatment
(0)
$10.59
$12.49
Extra 20% off online only with code SAVE20, see terms.
Sign In & Enjoy Free Shipping Over $49
Kordon® Ich Attack® Treatment
(0)
$14.99
$15.99
Extra 20% off online only with code SAVE20, see terms.
Sign In & Enjoy Free Shipping Over $49
Kordon® Rid Fungus
(0)
$12.49
Extra 20% off online only with code SAVE20, see terms.
Sign In & Enjoy Free Shipping Over $49
Kordon® Prevent Ich
(0)
$7.59
$9.19
Extra 20% off online only with code SAVE20, see terms.
Sign In & Enjoy Free Shipping Over $49
  1. 1
It’s never fun when a pet gets sick or starts to struggle with their health. Fish parents whose aquatic friend is dealing with diseases like ich or white spots need the right supplies to help their pet get back on the right track. Pet parents can find the fish disease treatment they need to care for their fish at PetSmart. We offer a huge selection of fish disease treatments for the most common issues. 
Our collection of fish disease treatments includes aquarium supplies like: 
Fish Ich Treatment
Bacterial Infection Treatment
General Cure Treatments
Fin/Body Cure Powder
And More
You are bound to find what you need to care for your fish at PetSmart. Looking for something else while you’re here? PetSmart carries other fish supplies for your aquatic friend. We sell products like fish foodfish feedersfish tank plant carefish pond caresaltwater aquarium carefish water care/conditioningfish 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.