Koi is suitable for blue and white lights. Fish farming should provide a certain amount of light, which has many functions. Besides being convenient to watch, it also helps the growth of fish or promotes its discoloration. Proper lighting is good, but the lighting time should not be too long. Usually, the time to turn on the lights is within 4-10 hours a day, and the lights must be turned off at night, otherwise it will affect the rest of fish and even endanger their health.

1. Convenient viewing: The main function of fish tank lights is convenient viewing. Usually, fish tanks are not placed in places with sun, because sunlight will cause algae to multiply, which takes up a lot of space and is harmful to fish's health. Therefore, it is necessary to use fish tank lamps for lighting, which will be more convenient to watch.

2, good for health: Although fish live in water, they also need a certain amount of light, and proper light can make them healthier. Because you can't get the sun at ordinary times, you can only fill the light through the fish tank lamp. Usually, the lighting time should be controlled in 4-10 hours every day, and remember to turn off the lights at night, so as not to affect the rest of fish.

3, promote hair color: For some fish that will change color, fish tank lamp also has a very important function, that is, promote fish hair color. It is worth mentioning that different fish hair colors need different illumination, so different colors of illumination should be used. In addition, it is necessary to match some foods that can make hair color, so that the effect will be better.