It may take a whole week to clean your pond. When doing so, you must be sure that all pollutants are removed. All silt, leaves, and other materials that are suspended at the bottom of the pond should be taken away. Also, uproot all plants and flowers that cannot survive the cold season. Moreover, eliminate those that can be blown into your pond from nearby. These procedures are necessary to prevent the growth of harmful parasites and bacteria in the pond.

Stop Feeding Your Fish

An average Japanese Koi takes more or less 4 days before the food it has eaten is completely digested, less so if the temperature is more than 50 degrees. During winter months, feed the Koi only once every day, especially if the temperature falls between 55 and 60 degrees.

If the coldness drops further to below 50 degrees or rises up to more than that, do not feed the fish at all.

Excessive feeding can eventually damage and kill your fish. Opening their mouths doesn’t’ necessarily mean they’re hungry it’s actually a learned reflex. Besides, they can also take and consequently digest other substances aside from the food you’re giving them. Perform An Annual Checkup Perform a seasonal periodic checkup of all your accessories and equipment, starting from medications to the filtration system.

The emergency kit nets, kits for water testing, and bags should also be accessible and constantly updated.

Get Ready for Cold Weather You can already start gathering all the items you may need for the winter on colder days. Japanese Koi Fish are known for being able to thrive even in temperatures below 40 degrees but for short time periods. If you’re considering purchasing a heater, it should be proportional to the amount of heat the pond requires, or else, it will not stop the formation of ice, which will then cause a high buildup of harmful gases in the water. It is also recommended to equip your pond with an emergency tank.