The diagnosis of your fish health problem is in one of these twenty videos and frankly, honestly? Most people have the problems figured out in the first 5. Because almost ALWAYS it’s a thing with crowding, or water quality, and then a parasite that responds to BSDT.

Start the Diagnosis Step 1 of Twenty

Diagnose A Fish Disease in 20 Steps Every Time

Diagnose A Fish Disease in 20 Steps Every Time

Diagnose A Fish Disease in 20 Steps Every Time

I did the videos in order of “most common cause of illness” down to video #20 that picks up viruses and further resources. I mean, not EVERYTHING comes from crowding1, water quality of five(2-5) kinds, failure to quarantine(6), seven(7-13) kinds of parasites, their treatment (14-15) fungus (16) bacteria (17) their treatment (18) and viruses (19).

Oh, wait. YES THEY DO. Every time. And that’s what those twenty videos are about.

But, if you’re like almost everyone, and won’t spend time learning and understanding this stuff and just want to fix it without improving as a hobbyist: Just buy these test strips, check your water, bioseed or provide new water, and throw some BSDT into the tank. You’ve got a 80% chance of fixing things.

Aquarium Water Cloudy

Wait, I’d like to actually get Dr Johnson’s HELP like, a consult. (Click)

Diagnose A Fish Disease in 20 Steps Every Time

Here’s a good video to kick off with:


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Dr Erik Johnson

Dr Erik Johnson is a Marietta, Georgia Veterinarian with a practice in small animal medicine. He graduated from University of Georgia with his Doctorate in 1991. Dr Johnson is the author of several texts on Koi and Pond Fish Health and Disease as well as numerous articles on dog and cat health topics.