While some people may not realize it, the proper amount of light in your aquarium is crucial for a suitable balance in the environment as well as a pleasing look. Every living thing in the tanks requires some light to live and reproduce; however, knowing exactly how much light is needed and controlling that amount of light can be quite difficult.
There are many variables to consider when deciding how much light your aquarium needs. Fish not only need light to see; it is also important for their reproduction. And certain species need varying intensities. Light also effects the colors of the fish – brighter lights tend to lead to brighter colors. Usually, fish require about 12 hours of some light for every day, and the intensity depends on the size of the tank. You can also look to your green plants to see if the light in the aquarium is appropriate. Green plants grow when there is enough light in the aquarium, green algae when there is too much. Lighting for aquariums is best in fluorescent styles; avoid incandescent bulbs since they give off heat – which can irritate the fish.