What is the Most Important Fish Water Quality Parameter?

Some would argue that it's Ammonia. The FIRST product of the nitrogen cycle and the primary waste product of fish.  Environmental Threats to Goldfish Health. Youtube Video about Ammonia with Dr Erik Johnson Goldfish health is impacted by far more than just the ‘way’ we care for the fish, or the parasites they may contract. […]

Fungal Infections In Koi and Pond Fish: White Cottony Growths

Fungal Infections Fungal infections in Goldfish are relatively common, but they always tend to represent the same thing. First, let’s talk about the clinical appearance of a fungal infection. The gross visualization of what appears to be a fungal infection is an unreliable means of diagnosis. Fungal infections usually appear as small to large tufts […]

Flukes or Trematodes in Koi and Fish Ponds

Flukes Monogenetic trematodes are a separate class of parasites from ciliated protozoans. The monogenea do not have an intermediate life cycle off the fish. Those trematodes that do are called Digenetic trematodes, and use a bird or a snail as an intermediate host. These are not a considerable pathogen of Goldfish and so we are […]

Tadpoles and the Pond

Tadpoles Controlling amphibians is not easy – but hatcheries try to control them, especially tadpoles, because the tadpoles take up space and use valuable resources in terms of oxygen, food, while contributing to waste production, for no net financial gain for the farmer.  Control: The growers try their hardest to catch the tadpoles while in […]

Use of Salt Against Parasites

This may be the most important article / video folks will see this Spring because for a LOT of people with sick fish, SALT at 0.3% may be the fastest and easiest way to limit fish losses AFTER testing the water to make sure it's not as simple as a low pH (ha ha ha) […]

You Should Know The Cycle

If you are not already familiar with the CYCLE, this is the process by which fish wastes and other debris are broken down by bacteria in an aquatic system. Let’s trace it here. The Cycle is a short series of bacterial reactions that purify water. Ammonia is produced by the fish, from gills (75%) and […]

Fish Medicine, Disease, Symptoms and Cure

Don't forget about the Youtube Channel that supports Koivet.com in the mission to educate (especially in time for Spring) when pond fish diseases get out of hand.  Youtube for Fish Medicines, Diseases Symptoms and Cure Also, don't forget about the book, Dr Erik Johnson's Koi Health and Disease 2  Finally, if you have not seen […]

Check Out The Youtube Channel

In case you missed it, I've got a growing Youtube channel with all my fish health videos and it's growing all the time. Doc Johnson's Youtube Channel for Koivet.com  Also, Koivet.com is being overhauled to a WordPress theme to be the best fish health, fish medicines symptoms and cure web site out there. Videos and […]

Coming Soon From Doc Johnson

Hello!  So, I've got all my domains (almost all of them) on WordPress and so I have a lot of work to do getting them set up for articles and such!  Hopefully I can get things "informative" quickly. In particular I want to get Watergardeners moving as quickly as possible!  In the meantime, check out […]