Good afternoon, dear aquarists! Today I want to distract from the inhabitants of the aquarium and give a little attention to the lighting of the aquarium, and more specifically to the color temperature of aquarium lamps.
These things should be known to all aquarists as I believe, because this is the basis for creating normal conditions for housing and fish and plants.
The most complete color spectrum of illumination radiates our light – the Sun. Sunlight consists of different color waves. They can be yellow or white, it all depends on the time of day, but separately they have different colors. When you select lamps for an aquarium, different parameters can be written on each of them: 2000K, 10000K, 6500K, 5500K.
These numbers mean the color temperature of the lamps.
Partly from the power of the lamp, you can determine its intensity, but remember that even with the same power, light sources can vary in intensity depending on the type of light source itself. Mainly in aquarium use lamps with a temperature of not less than 5500K, except incandescent bulbs that are added to the lamps), since the red and yellow spectrum of such lamps provoke the development of algae.
Lamps with a luminescence temperature of 5500–6500 are intended for shallow freshwater cans. Fans of marine aquariums such lamps can be used to illuminate reefs and other marine organisms, adding additional actinic radiation in case of its shortage.
Lamps with a temperature of 10000K carry out an intensive white luminescence with a blue shade. Such lamps are just suitable for lighting deep-sea plants, fish and reefs. These lamps especially emphasize the natural color of fish and plants.
A lamp with a color temperature of 20000K have an extremely high intensity, in which the blue color prevails and is used mainly for lighting deep-water aquariums with fish.
Actinic light for aquarium tubes on the Kelvin scale is not measured, since this light is more related to ultraviolet radiation, which we hardly see. Lamps with this color spread the blue-violet glow, which emphasizes the paint of corals and tropical fish.
Such lamps are very often used to illuminate aquarium reefs. Aquarium lamps of all types are commercially available in equal proportions, so depending on the region where you live, you can determine the type of lamps for your aquarium by their availability.