Pond Health Related Questions

Why do you recommend test kits for ponds, I can see the water is clean?

Pond test kits show up levels of fish waste in the water: Ammonia, Nitrite and Nitrate, all of which are detrimental to the fish and in the case of Ammonia and Nitrite can be fatal at high levels. Because these substances are all dissolved in the water they are not visible and it is quite possible to have water that is clear and appears clean but which is extremely unhealthy for your fish.


What is the best dosage rate for salt in the koi pond?

½ ounce per US gallon is the standard rate to use salt for support in the treatment of ulcers, fin rot and some parasite problems. This can be increased over a 3-day period to a level of 1 ounce per US gallon when fish are suffering from large ulcers. The salt should be removed with a series of water changes after the treatment is finished.


Should I keep salt in my pond all year round?

Koi are fresh water fish and while a low level of salt may not appear to cause any problems, it is better to keep your fish In fresh water, unless using salt for a specific problem such as the treatment of ulcers.

I've been advised to treat my pond once a month with anti-parasite treatment as a preventative treatment, is this a good idea?

No, most medications have undesirable side effects such as reduction of oxygen level or killing some of the filter bacteria. Your koi should only be subjected to these effects if there is a specific disease problem in the pond that poses more of a risk to their health. Even then it is important to ensure the water quality is correct and to identify the cause of the problem before commencing any treatment.


Poor water quality kills more koi than any disease and testing the water parameters should always be the first step if your fish are unwell.