The lights in the fish tank had better be on and off at night. Light is very helpful to the health of fish and can also promote coat color. If there are aquatic plants in the tank, they can accept light for photosynthesis, which is not only beneficial to their own growth, but also can release oxygen. It should be noted that long-term light often affects the rest of fish, and also makes algae multiply, thus polluting water quality. First, is it better to turn on the light in the fish tank or not? The light in the fish tank is best on, but it is best to turn it off at night. Light is very helpful to the health of fish and can also promote coat color. If there are aquatic plants in the tank, they can accept light for photosynthesis, which is not only beneficial to their own growth, but also can release oxygen. It should be noted that long-term light often affects the rest of fish, and also makes algae multiply, thus polluting water quality.

Second, what lights can be put in the fish tank 1, led lights: led lights are the mainstream aquarium lights at present, generally placed in glass tubes, which can be waterproof. Its appearance is beautiful and energy-saving, so it consumes less electricity, is more convenient to maintain and has a longer service life. It is the first choice for fish tank lamps at present.

2, halogen lamp: halogen lamp is also one of the commonly used lamps in fish tanks. This kind of lamp has good light transmission, but the irradiation area is limited, and many pieces are needed to achieve the ideal effect. It should be noted that it is more suitable for straw tanks than fish tanks.

3. Energy-saving lamps: Energy-saving lamps are very common, but they are not used in aquariums. Because of their unique shape, they are generally U-shaped, so the lights are relatively concentrated, so they are not suitable for being placed in large fish tanks, and only mini tanks can be used.