California perch is a very popular commercial fish in recent years. Because the meat is delicious, the price is low, the breeding difficulty is small, the breeding area all over the country rises substantially. Has become the most competitive aquaculture alternative to the traditional fish.
Aquaculture has a certain seasonality. In peak shipping season, the price is often unsatisfactory. And the wrong peak shipment, often can step on the market rhythm, improve the overall breeding income. Therefore, as early as possible under the seedling, as early as possible shipment, the first to enter the market, is a key to make money in California perch farming.
For the farm, it is also important to make money on an annual basis by taking the time to spot quality California perch as early as possible. And "as early as possible" means before the Lunar New Year.
It is freezing in the north, while the Lingnan region is warm as spring. Therefore, Guangdong, Guangxi, Hainan in recent years to become the California bass seedlings of the largest concentration of places.
Even so, when cold air lingers for long periods of time, the water still needs to be warmed. The water standard seedling will lead to a large loss of heat and dissolved oxygen in water. Therefore, recirculating water is a very reliable way to mark the coarse fry.
California perch seedstock suggests a deep winter shelter pond as a water source. The water quality is better. Circulating water workshop and fish pond should be well insulated. When the temperature is high, the water can be properly pumped from the earth pond to change the water of the circulating water system. Full cycle operation is carried out when the temperature is low. The circulating water standard crude system mainly includes the following parts:
1. Heating equipment. Mainly to deal with the conditions of low temperature in the shed. The main equipment is an air energy heat pump. It grabs heat from the air and heats the water. And for the energy input of one degree of electricity, you can output 3-6 degrees of heat. It is a very energy-saving heating equipment. In summer, it can also be used as a water chiller. Heat pumps do not work 24 hours a day in the case of proper insulation measures for greenhouses and fish ponds. It only replenishes the heat lost by evaporation of water and cooling of fish ponds.
2. Oxygenation equipment. We recommend ultramicro bubble generators and oxygen generators. An oxygen generator is a machine that produces pure oxygen. Ultramicro bubble generator is a machine that can be specially used to mix water and oxygen. It can break oxygen bubbles into very fine bubbles less than 0.1mm in diameter. The total contact area between gas and water is greatly expanded. It can also make the bubble stay in the water for up to 2 minutes. In this way, the utilization of pure oxygen can be greatly improved. Taking a 1.1KW ultramicro bubble generator as an example, it can oxygenate 60 cubic meters of circulating water, and with 5L/min oxygen generator, the dissolved oxygen in water can be stabilized at about 9ppm.
General fan oxygenation Ghana meter tube is the most common way of oxygenation. But for one thing, the bubbles they produce are so large that they typically don't stay in the water for more than two seconds. Very little oxygen actually dissolves into the water. Relatively high power consumption. In addition, because the air temperature will increase when the fan compresses the air, the hot air will escape from the water when used in summer, which will cause the water temperature to rise. We know that when the water gets hotter, the less soluble oxygen is in the water. The ultimate efficiency of fan oxygenation remains to be discussed.
3. Biofiltration system. The ammoniacal nitrogen and nitrite content in water should not be too high during the period from spray to seedling. Because juveniles are more sensitive to these toxic substances. If nitrogen and nitrite exceed the standard, the fry will not eat or even die of hypoxia. So. A biofiltration system is essential.
The biological filtration system not only needs the coordination of water temperature, dissolved oxygen and PH, but also needs the physical filtration as the basis. It is the key to reduce the load of the biofiltration system to separate the organic matter such as fry feces and residual bait from the water at the first time.
4. Physical filters. We recommend the use of drum microfilter. Automatic design, timely automatic backwash characteristics, can be in the shortest time to separate organic matter from the circulating water system. If the site conditions permit, it is best to use with sedimentation tank.
5. Ultraviolet sterilizer. During the period of fish fry marking coarse, disease prevention is an important link. To control the concentration of pathogenic microorganisms, UV sterilizers can be used. The piped-type UV sterilizer only sterilizes the water flow through it without any harmful residue. Probiotics cultured with biofiltration system can suppress the concentration of pathogenic bacteria and viruses to a very low level. Significantly reduce the incidence of fry disease.
Under the strong support of water treatment system, combined with their own standard coarse technology of fry, step on the market rhythm of seedling emergence. It has been the mature operation of some customers of Lanling. Just in time for the California perch boom. Circulating water mark rough will become the tide to make money!
