Goldfish farming needs light. If possible, it is best to provide sunshine, which can promote the absorption of calcium by goldfish and make the color of goldfish body surface more gorgeous. Ultraviolet rays also have a certain bactericidal effect, which can help kill harmful bacteria in fish tanks. When there is no way to provide sunlight, light can be used for lighting. It is best to use full spectrum lighting, and you can choose metal halide lamp or LED lamp. 1. Do goldfish need lighting? Goldfish need light to breed, and the best light is sunlight. Sunlight can not only promote the absorption of calcium by goldfish, but also make the color of goldfish body surface more beautiful. At the same time, the ultraviolet rays in the sun also have bactericidal effect, which can kill the bacteria that are unfavorable to goldfish in water to a certain extent. But if the goldfish is exposed to the sun, it must not be exposed to the sun at noon, otherwise it is easy to prevent the goldfish from being hurt. If the fish tank can't get sunlight, it can be illuminated with lights.
2. What lamp does the goldfish use? When lighting is needed, it is best to choose a full-spectrum lamp close to the sun. For example, metal halide lamps and LED lamps are all good choices. Be careful not to choose a red light when choosing a light. This kind of lamp has no other function except to make goldfish look better temporarily.
When you use light instead of sunlight to illuminate the fish tank, you should choose the appropriate wattage lamp according to the density of goldfish. It is best to turn off the lights at night, so as not to affect the normal rest of goldfish. The light used in the fish tank should not be too strong, otherwise it will also affect the health of goldfish and even make it blind.