Table of contents:
- Experienced aquarists believe that maintaining optimal lighting and water temperature affects not only the performance of the guppy's reproductive cycle, but also their growth and well-being
Video: Guppy: Lighting And Temperature
Experienced aquarists believe that maintaining optimal lighting and water temperature affects not only the performance of the guppy's reproductive cycle, but also their growth and well-being
This chapter is based on the work of ten of the most famous guppists in Philadelphia, Chicago, New York and Florida. On average, they recommend the following values: duration of illumination up to 12 hours a day, water temperature - about 25 ° С (optimal range 23-27 ° С). And the novice guppist should stick to these parameters.
The intensity and duration of the light is of great importance for the health of the fish. Laboratory studies, for example, have confirmed suggestions that strong continuous lighting causes infertility in fish. This is sometimes used by indiscriminate guppists to obtain highly decorative fish. The result of their efforts is indeed quite beautiful, but, unfortunately, is not capable of reproduction.
Experiments with several breeds of guppies show that continuous lighting for 5 weeks affected the color of the fish, it became less bright. For example, almost all areas of the body that were painted red became very pale pink, washed out and faded. Even a 24-hour exposure to bright light results in a reduction in the guppy's intense coloration. True, it should be noted that after a while the color gamut is restored, which, however, does not happen with the reproductive function.
In winter, the aquarium should be lit for 10-12 hours, in summer 12-14 hours. It is recommended that for some time, especially in the morning, the sun's rays fall on it (to prevent the development of algae in the aquarium, you can hang a gauze curtain on it).
* The total duration of lighting, including natural light, in the summer should not exceed 15-16 hours at a low temperature of the content and 13-14 hours at a high; in winter - an hour or two less.
For additional lighting of the aquarium about 20 liters, a 15 W lamp is sufficient, 40 liters in summer 15 W, in winter - 25 W, 100 liters - about 40 W.
Most scientific advice is based on the assumption that a standard aquarium with a capacity of about 20 liters has a height of 30 cm. A luminaire with a 15-watt incandescent lamp or a fluorescent lamp is sufficient for such a container. The lamp is placed above the aquarium in its center. Most aquarium lights have a reflector to create a directional flow of light.
And in this matter, the Indian fern will again help us. If it grows well and has a healthy green foliage, your pets are getting enough light. If the plant grows slowly, and the leaves acquire a brownish tint, then there is a lack of lighting in the aquarium. And if the fern is covered with green algae, and even the water has bloomed, there is a clear excess of light.
Guppy can survive in water temperatures from 4 to 36 ° C.But at temperatures below 17 ° C, it is more susceptible to disease. Guppy reproduces successfully in the temperature range from 20 to 30 ° C. The optimum water temperature for keeping and breeding is 23-27 ° C. Daily temperature fluctuations within 3-5 ° С are permissible, but its rapid changes should not exceed 2 ° С. At low temperatures, the guppy grows and develops slowly, but reaches a larger final size, later comes sexual maturity, longer intervals between litters. Depending on the temperature, the spawning intervals can vary from 20 to 60 days. At high temperatures (26-30 ° C) maturation and aging occurs earlier, and fish, especially males, are undersized, the veil is underdeveloped. In large fin guppies, the caudal fin acquires a better shape and larger size at temperatures below 26 ° C.Raising the temperature to 27 ° C, combined with frequent water changes and full feeding, accelerates the growth of guppies. However, this way of raising fish is not always acceptable, because it results in an increased sensitivity of fish to lower temperatures and smaller end sizes than fish reared at lower temperatures.