Having made a provisional choice of pond position, consider where you will stand to view the koi. To get the best view, there should not be too many reflections on the water surface. Reflections can cause other problems, too, when carrying out maintenance or trying to net a fish for treatment, looking into bright light can be difficult.
You can cause a great deal of unnecessary damage to other fish while trying to catch a particular koi. Choosing a viewing area on the sunny side of the pond will mean standing with your back to the sun, but it will make looking at the pond much easier.
You can test for possible problems caused by reflections by standing a container of water on the spot where the pond will be and observing the results. If an existing pond suffers from reflections, or it is impossible to design a new pond in any other location, then consider placing a screen of trees or a fence behind the pond to produce a large dark reflection against which the koi will stand out.
A modern pond required a protected electricity supply, with sufficient capacity to run circulation pumps, air pumps, electric water heaters, vacuum pumps, ultra violet clarifiers and lights, etc.
It must be laid to the site of a suitable dry service chamber, often known as a pump house. Terminate the supply in the pump house with a residual current circuit breaker and suitable fuse box from which to wire all the necessary equipment.
This will isolate the pond system should a problem arise. Always consult a qualified electrician for details of local codes and regulations, and seek installation advice if you are in any doubt.
You may decide to use electricity to power a swimming pool heater. This may not be as cheap to run as a gas broiler, but can be used effectively during the winter months to prevent the temperature falling below about 12 Celsius. At this temperature, the fishes immune system is ticking over, they are feeding lightly and therefore in good health.
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