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Symptoms Finder

You'll get a picture of the koi/goldfish, you click on the koi fish where it's sick, or choose from several other behavioral options that your koi may be exhibiting.

What KoiCrisis Is For?

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We offer FREE personal help with your sick fish and/or pond water quality problem. Fill out our easy “Help Form” by Aqua Meds

Feeding Koi

What to feed?
What not to feed?
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Aqua Meds®

Have questions about care of sick fish and/or pond water quality problems and how to treat them? We have the answers.

Fish Medicines

Learn about fish medicines, what they do, and where to get them.


If you have a koi, pond or fish problem, this site takes you through twenty easy questions and at the end you know what you need to fix in your pond to create restored Koi health.



Acriflavine Koi Care

What It Is: Acriflavine is an orange powder that occurs in the chemical class of acridines. The powder should be mixed with distilled water to make a stock solution for dosing purposes and should never be dosed in its dry form.

What It's Good At: Dosed at 5 ppm, Acriflavine is effective in the eradication of several ciliated protozoan parasites including Oodinium, which is pretty resistant to most everything else. Acriflavine also controls many bacterial infections, which are on the surface of the fish. If used daily as a dip, Acriflavine effectively reduces and clears viral Lymphocystis dermal and fin lesions.

Update: To control bacterial infections, ulcers, body sores, fin & tail rot. Ulcer Aid Rx is now the treatment of choice for a dip.