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Koi Fish in Hot Climate 25 June, 2020   

In the long term, this simple technique can help keep your pond water cool and under control. This technique was given to me by Jean-Claude Reuille, a Koi fish enthusiast. Mr Jean-Claude Reuille has over 100 Kois in 2 ponds. As Jean-Claude Reuille says: "The water does not need to reach boiling point or even feel like it, but when the water temperature rises above 80 F, it is already hot enough to cause problems for the fish in the pond."
A sure sign of trouble is that the fish are gasping for air near the water surface and warm water does not contain as much oxygen. You may notice Koi coming to the surface of your pond with eyes wide open and mouth wide open.
"Pay special attention to your pond when the water temperature rises to 80 degrees Celsius or higher, especially in the summer and spring months", says Jean-Claude Reuille.
Make sure that your pond water circulates at least twice as much as in the summer months. Frequent water changes can help keep your Koi cool and oxygenated at home. By providing shade to the pond, changing its water, adding pond nets and adding pond dyes to the water, you can keep  bad algae away.
Do not forget to keep your pond water level with clean, de-chlorinated water, especially  in summer when there is a higher evaporation. The southwest sun can be intense for your Kois and also take a toll on the rubber or plastic lining you may be using for the bottom of the pond.
Kois hibernate in colder climates but can adapt to warmer summers, so protecting them from the negative extremes of climate change is crucial. Some desert plants shed their leaves in summer, while plants in cooler regions do so annually in autumn, but not all plants.
When designing a Koi pond, be sure to add leafy plants and shady structures so that the fish can seek shelter from the sun's rays. The intensity of sunlight in your region is also important, as it can affect the feed of the pond, plants and fish. If your pond is not large enough to protect the Kois from direct sunlight, you should consider giving it shade. In Jean-Claude Reuille ponds, plants are also used to clean the water by eating the nutrients.
When it comes to keeping your Koi in shape, it is especially important to keep the water in shape, as they need good conditions to reach their full potential. "One of the most important things about keeping Koi is making sure they have enough oxygen at all time!" keep insisting Jean-Claude Reuille.
If you follow these steps, cool down your pond and create a healthy environment for your fish during the hot summer, your Kois will be happy. If the temperature rises, see below for tips on maximizing the oxygen supply to your Koi fish and their water quality:

Setting up a waterfall or fountain is a great idea to provide oxygen and make your ponds even more lively and beautiful.
As you prepare for the hot summer months, make sure you have enough shade and create a Koi pond with at least 2-3 feet of water. Your fish need an area to stay cool and in this case you should make sure that your koi pond is partially shaded.
Remember that the optimal water temperature for koi and goldfish is between 70 and 78 degrees. In the case of an indoor Koi pond, the recommended temperature is 60 - 70F (20 - 25F) degrees. The water temperature can rise after the fish have been fed.
In in Facebook page, Jean-Claude Reuille explains that there are a number of ways to deal with the detection and control of parasites, as well as information on parasite management of Kois.
Kois strive to survive in ponds up to 36 inches deep in milder climates, and even in warmer climates, if properly maintained and designed as their home, they can survive through cold winters. Koi will survive when temperatures drop to 40-50 degrees and begin to hibernate, but they will not feed until temperatures rise again in spring, as excess food can rot in their digestive system and make the fish sick. They will also survive freezing temperatures as long as they are designed to do so. But this is no concern for the Koi in Mr Jean-Claude Reuille ponds as the temperature are usually warm.
If your area is known to be particularly cold, you may consider moving your Koi for the winter into an indoor tank and using a pond heater. This is necessary to keep the fish in the pond in full sun and to warm the water surface in summer.
Koi prefer cool water, and a pump helps keep the water at a constant temperature by allowing cooler water to circulate from the bottom. A pump is also a necessity for avoiding Gambusia, a native mosquito that eats fish. Although they are not as colorful as goldfish,  Koi are hardy and have nothing against warm pond water as long as it is cool.

Koi ponds water temperature fish

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