The biggest function of the light in the fish tank is to facilitate viewing, especially at night. Because many fish tanks are capped, the light outside cannot be directly projected from above, while the light inside can take in the situation inside the tank at a glance, which is convenient for us to observe the situation of the fish.
If you keep some aquatic plants in the fish tank, such as all kinds of aquatic plants, the growth process needs a certain amount of light, with the lamp can not only make them grow well, but also promote photosynthesis, thereby releasing oxygen and improving the water environment. Some people worry that the lights will explode algae, but as long as there are aquatic plants, they can inhibit the proliferation of algae.
Some lamps in the fish tank also have the effect of heating. This is mainly aimed at some tropical fish, because these fish have extremely high requirements for water temperature. They need to keep the temperature between 20 and 30 ℃. Too cold will affect their appetite and may even cause their death. Some heat lamps replace heating rods and can raise the temperature of the environment.
Some ornamental fish look colorful, their color is often related to the light, so the lights in the fish tank can also lure color for some fish, so that they look more beautiful. For example, red dragons, parrots and so on, provide red light source, can increase the degree of its color, there are also some fish prefer blue light.
