If the indoor light is not enough, you need to turn on the lights to supplement the light for the colorful angelfish. Light can promote their physical development, and can also increase the ornamental value of the fish tank. But in general, four to five hours of light a day is enough, and the light intensity should not be too high. Bulbs generally choose about 6500K tube can be.
If you need to turn on the lights at night, it is best to install a small night light in the aquarium, which is a relatively gentle transition, so as not to frighten them.
In the actual cultivation of colorful angelfish, it is not necessary to turn on the lights for 24 hours. Light is indeed conducive to its growth, but if too much will also affect its rest. In order to make it grow better, the environment of the aquarium should be similar to that of the wild environment, and the lights can be turned off at night.
In the case of insufficient indoor light, four to five hours of light can be used in a day. Lighting for too long will also affect its physiological activities. And angelfish are relatively timid, in a strong light environment, they may be frightened and hide.