how quickly do you see improvements? This is day 3 for me and not seeing much improvement yet.

Ich medicine can only kill the ich when it’s free swimming. The ich rotates in a life cycle. When you see the white dots on your fish there is ich feeding on your fish’ skin. The individual parasite leaves the skin eventually falls to the substrate and multiplies. Then all the new parasites release into the water looking for a fish(free swimming stage) and this is the only time they are vulnerable to medicine. This whole life cycle takes multiple days probably a week. So I’m not surprised you don’t see improvement after 3 days. Just making this comment so other people will see this and be informed that ich is a lengthy treatment and it doesn’t matter what medicine you’re using because they’re all only effective when the ich is free swimming.

does this only kill the ich that is on the fish and not the cysts that lie in the gravel

It does not kill Inch on the fish or the cysts in the substrate. It only kills the swimmers that hatch from the cysts. That is why you must go thru the complete cycle.

directions kind of confused me, on the second day after doing 1/3 water change, do I do full initial dosage again? does clarify.

When I replace the 1/3 water I add a full dosage of ich x along with Prime or dechlor product to help fish coat. This works for me.

What are the ingredients duh?

From the label: "Contains: water; formaldehyde (<5%), methanol (<2%), malachite green chloride (<0.1%)."

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Description

🛡️ Defend your aquatic kingdom with the gold standard in parasite treatment!

ESSENTIAL EMERGENCY BACKUP - Keep this aquarium lifesaver on hand to prevent outbreaks and maintain your tank’s health.
TRUSTED BY AQUARISTS WORLDWIDE - Highly rated with 4.6 stars and a loyal following for reliable, fast-acting results.
POWERFUL MULTI PARASITE DEFENSE - Clinically proven to eliminate ich, velvet, trichodiniasis, and saprolegniasis for a thriving aquarium.
SAFE FOR PLANTS SENSITIVE SPECIES - Gentle enough to protect your aquatic plants and snails while eradicating harmful pathogens.
PRECISION FORMULATED LIQUID TREATMENT - 4-ounce concentrated liquid ensures easy dosing and effective parasite control.

Hikari USA AHK73214 Ich-X is a 4-ounce liquid aquarium treatment expertly formulated to combat ich, velvet, trichodiniasis, and saprolegniasis. With a precise blend including less than 5% formaldehyde and under 0.1% malachite green chloride, it offers powerful parasite elimination while remaining safe for plants and sensitive tank inhabitants. Trusted by aquarists globally, this treatment is a must-have for maintaining a healthy, vibrant aquatic environment.

Specifications

ASIN	B007R5KFMO
Allergen Information	Almonds Free
Best Sellers Rank	#29,548 in Pet Supplies ( See Top 100 in Pet Supplies ) #410 in Aquarium Fish Food
Brand Name	Hikari
Customer Reviews	4.6 4.6 out of 5 stars (895)
Global Trade Identification Number	00042055732147
Included Components	Hikari Usa AHK73214 Ich-X for Aquarium, 4-Ounce
Item Form	Liquid
Item Type Name	aqUarium treatment
Item Weight	9 g
Liquid Volume	4 Fluid Ounces
Manufacturer	TopDawg Pet Supply
Manufacturer Part Number	042172
Model Number	42172
Target Species	Fish
UPC	042055732147
Unit Count	1 Count

Reviews

S**Y

Cured my 20 gal tank of ich, and didnt affect my plants. Took out my nerite snails and treated them with a lighter dose and they are just fine! no deaths and everybody is doing great months later. Did dye the silicone slightly but nothing that noticeable

8.02.2026

L**T

Bought this for back up, yet to use it but its defo reccomended to keep in your fish cabinet!

15.06.2019

P**S

My bettas died even after treatment

11.03.2022

S**M

Parece que funcionó, mi pleco no le veo más puntos negros , lo que sí es tener cuidado, mancha, se me cayó al piso y no he podido sacarle la mancha.

30.11.2025

B**N

It works. Will dye silicone

7.09.2019

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