Author: 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.
19
Sep
2019

Ammonia Toxicity in Aquatic Environments

Where Are Ammonia Levels From? Recall from the “cycle” discussion that Ammonia is the primary waste product…

19
Sep
2019

Nitrites: Nitrites’ll Kill Some Fish, There’s a Test

Where do Nitrites Come From? Ammonia is reduced by a bacteria called “Nitrosomonas” into Nitrite. These Nitrites…

19
Sep
2019

Nitrates and What You Need To Know. Nitrates KILL Fish.

Nitrate in Aquatic Animal Health When the cycle nears completion, you know that the Ammonia has been…

19
Sep
2019

Why Carbon Dioxide is a “Thing” in Fish Medicine and Their Fishy World

Carbon Dioxide Impact on Koi Fish Health via PH Carbon dioxide is produced by most life forms…

19
Sep
2019

Hydrogen Sulfide Gas is a Rare Problem But It Kills When It’s Present.

Hydrogen Sulfide is not a common problem in fish ponds, as far as we know. (It *is*…

19
Sep
2019

Flooming, Sponge Filters, BioFilm and Osmosis Defined.

*Air Stones* – Retailers sell electronic pumps which force air through tubing into a porous stone. The…

19
Sep
2019

Why Culturing The Outside of the Koi is Poor Diagnostically

Bacterial cultures taken from the outside of the fish, or directly from the ulcer can be badly…

19
Sep
2019

How To Avoid Creating Separation Anxiety in Puppies

Ultra-Simplified, to avoid Separation anxiety in adult dogs, provide them with separation when they’re babies. Put them…

19
Sep
2019

Can You Get a Bacterial Infection From Swimming With Koi?

Can You Get an Infection From Swimming with Fish? Bacterial infections from swimming with fish Aeromonas, Pseudomonas,…

19
Sep
2019

KHV or CGNV Sleeping Sickness?

On Sat, Apr 13, 2019 at 4:51 PM R. KROUZEL  wrote: > > Watched your KHV video…

19
Sep
2019

What Are the Pimples in The Goldfish Cap or “Wen”?

A male goldfish can be identified by tiny white pimples popping up on the cheeks and the…