Critter Quitter – Broad-Spectrum Fish Treatment

Critter Quitter is a premium, broad-spectrum treatment designed to keep koi and ornamental pond fish thriving by targeting a wide range of common aquatic diseases. Its synergistic blend of high-quality active ingredients is engineered to attack parasites and fungal infections while remaining gentle on fish and the pond environment.

Unlike harsh, old-school treatments, Critter Quitter uses an advanced, less-toxic formula that delivers strong results with reduced stress. It is effective in water temperatures as low as 50°F, making it suitable for early spring, late fall, and everything in between.

What Critter Quitter Treats

Critter Quitter is formulated to address both parasitic and fungal infections commonly seen in pond fish, including:

Ichthyophthirius (Ich, white spot disease)

Costia

Trichodina

Chilodonella

Oodinium (velvet)

Fungal growths on skin, fins, and gills

These issues cause flashing, excess slime, visible spots or fuzz, clamped fins, and general decline. Critter Quitter provides broad-spectrum coverage so you can tackle multiple problems with one treatment.

Key Features

Broad-spectrum action against parasites and fungus

Less-toxic formula designed to be fish-friendly

Effective at low temperatures down to about 50°F

Synergistic blend of actives for enhanced performance

Designed for ornamental ponds, not food fish

Directions for Use

Standard Dose

Add 3.5 fl oz of Critter Quitter per 1,000 gallons of pond water.

Preparation

Perform a minimum 25% water change before the first treatment.

Remove carbon filtration during treatment so the product is not stripped out.

Maintain strong aeration at all times.

Repeat Treatments

Treatment may be repeated every 12-24 hours 

Monitor fish closely for signs of improvement or stress.

Important Restrictions

Do not use with other medications.

Do not use with salt.

Always provide strong aeration during use.

Pond Size Dosage Chart

All doses use the label rate of 3.5 fl oz per 1,000 gallons.

Round carefully and measure as accurately as possible, especially in smaller ponds or quarantine tanks.

Safety and Handling

For ornamental pond fish only

Not for fish intended for human consumption

Keep out of reach of children

Avoid contact with skin and eyes

Store between 60°F and 110°F

Wash hands thoroughly after use

Frequently Asked Questions – Critter Quitter

What does Critter Quitter treat?
Critter Quitter targets ich, costia, trichodina, chilodonella, oodinium, and common fungal infections, giving you broad coverage with a single treatment.

What is the correct dosing rate?
Use 3.5 fl oz per 1,000 gallons of pond water. Always base your dose on an accurate pond volume calculation.

How often can I repeat the treatment?
The treatment may be repeated every 12-24 hours. Do not rush dosing; observe fish carefully before repeating.

Do I need to remove my filters?
You should remove carbon filtration during treatment so it does not absorb the medication. Mechanical and biological filtration can remain in place with strong aeration.

Can I use salt or other medications with Critter Quitter?
No. Critter Quitter should not be combined with salt or other medications. Use it alone for the duration of the treatment cycle.

Is Critter Quitter safe for koi and goldfish?
Yes, when used at the label dose with proper aeration and water changes. Its less-toxic formula is designed for ornamental pond fish.

How soon should I see improvement?
Many ponds show reduced flashing and better behavior within the first few treatments, depending on parasite load, temperature, and overall water quality.