I. Timely clear pond
After 2-3 months of cultivation of fish ponds, water quality has generally been aging, natural foods have been reduced, and harmful gases such as hydrogen sulfide and pathogenic bacteria have increased. After the fall, the fish should be transferred to ponds that have been sterilized in the clear ponds. Where water and fish ponds are difficult to turn around, all the fish species can be transferred out of stocking, and the original pond can be disinfected with 75-100 kg of lime per acre and the water quality can be fertilized according to conventional methods. The fish species is turned back to ensure the purification of the living environment.
Second, split management
Fish species should be properly reared according to different specifications, so that the specifications for the fish species returned to the pool are the same. Because large-scale fish species have large food intake and strong grab power, if small-scale fish species are stocked at the same time, the fish will not receive enough food and their physical quality will decline. Fishes over 16 cm in size can be placed in adult fish ponds. Smaller fish species need special pools for cultivation, so as not to cause food shortages, and stronger and weaker weaker extremes occur.
Third, regular tour pool
During the cultivation of the fingerlings, it is necessary to insist on daily observation of the fish’s food intake and growth status, pay attention to changes in water quality, change new water frequently, and add new water once a week. And often clean the food market, remove the residue leftover bait in time, half a week in the food market with bleaching powder spilled 0.5 kilograms of water, regular feeding baits, preferably twice a month, each feeding 3 consecutive days, found sick fish , Dead fish should be removed in a timely manner, and at the same time diagnosed and given drug control.
Fourth, reasonable and rare
The cultivation of large-scale fish species in the autumn is an important part of raising the survival rate of winter fish species. It should be based on the size of the water, the depth of the water body and other conditions, a pond that is 1.5m deep and has a water depth of 1.5 meters, and stocks 7-8 cm long fish per acre. This kind of 4000-6000 tail, up to the end of the year up to 13-17 cm body length.
The Bullet Fixed Focus Camera/ Bullet Fixed Focus CMOS Camera/ Bullet Fixed Focus Webcam/ HD Bullet Fixed Focus CCTV Camera/ Fixed Focus Bullet Webcam Outdoor/ Infrared Fixed Focus Bullet Cameras means that the Bullet Fixed Focus Camera belongs to not only the Fixed Focus Camera but also the Bullet camera. So what is the Bullet Camera?
The Bullet Camera is one type of the surveillance CCD cameras. The Bullet Camera has a rectangular parallelepiped appearance, and the front side is a C/CS lens interface(the Bullet Camera does not include a lens).
The Bullet camera is powerful, widely used and high cost performance. With the security surveillance camera applied extensively and deeply, such functions as the high-definition imaging technology, high-definition through-fog function, infrared detection and lock, day and night conversion infrared camera shooting function, have been widely used in the TV surveillance projects. The day-night conversion infrared camera shooting function of the Bullet Camera enables the camera to detect infrared rays in the day-night conversion mode and realize the filter switch, which can solve the frequent day-night conversion problem of the ordinary day-night cameras, and can effectively reduce image noise in low-light environments at night and improve the image quality.
The zoom range of the Bullet Camera depends on the lens you choose, from several to ten times, and the lens replacement is very convenient. The long-distance or wide-angle monitoring can be realized by selecting different lenses.
The Bullet Camera has many applications. For example, as for the road monitoring, even if the changing range of the vehicle speed is large, the Bullet Camera can provide clear pictures. Also, the Bullet Camera can capture the license plate via the built-in glare suppression function and the manual electronic shutter setting. Besides, the Bullet Camera can truly reproduce the dynamic picture at night, and it is suitable for the places which are monitored 24 hours a day, such as the expressways, toll stations, safe cities, etc.
In conclusion, nowadays the Bullet Camera is one of the major Cameras. And the Bullet Fixed Focus Camera is very popular because of its powerful functions, simple and elegant appearance.
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