Pond owners raising grass carp catch culture
We provide quartz sleeve for the uv lamp.
The quartz sleeves are probably the most abused components of a UV system, yet they are one of the most critical for delivering UV rays into the water stream.
Sleeves provide a protective barrier around the lamp so that the lamp can operate at its optimal temperature. For the quartz sleeve to maximize a unit`s performance, both the interior and exterior of the sleeve must be cleaned periodically, even in UV units installed in ultra-pure water systems. All quartz sleeves are susceptible to fouling.
Cleaning frequency of quartz sleeves will be site-specific and directly related to water quality. UV systems that are installed in post-reverse osmosis/deionization (RO/DI) locations will require cleaning much less frequently than units installed on raw water or surface water systems. As a general rule of thumb, a post-RO/DI system should have the quartz sleeves cleaned once a year.
Plan on cleaning quartz sleeves quarterly on post-activated carbon systems and more frequently for hard water applications exceeding 5 grains of hardness.
Standard clear quartz glass tube is high quality purity and automatic controlled fusing furnace
It has the characteristics of high purity,strong resistance,high transmission and accurate dimensions,and the OH content 1-20ppm after air of vacuum baking is available.
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First, a stocking. Put enough fish
1, stocking time: adhere to early fish early stocking. Every year in November, dry ponds receive fish, in December the ponds are cleared, and fish species are released before and after New Year's Day, and they end at the end of January.
2. Stocking mode: Grass carp is mainly used to raise fish, and there are many varieties and specifications of polyculture. Such as: The first-age grass carp, set the second-old fish in the old way.
3. Stocking capacity: The pond with 400kg per mu is calculated according to the planned output of 1/6, and the pond with more than 500kg per mu is calculated as 1/5 of the planned production.
Second, many rounds of catching, catching large and small ponds, catching round seven times a year, and with the growth of fish in batches to catch in seasons, catch fish grown to meet the food specifications, and adjust in time. Pond load. The second-in-line fish was caught in May and was caught every 25 days between March and June. The second-instar fish that grew above lkg were all caught. From August to October, grass carp, squid, and tilapia that reached the specifications were caught.
Third, set up fish fry, a reasonable close in the process of catching, in accordance with the season and the need to add part of the fry, increase the number of regrowth index, so that the pond has always maintained a reasonable stocking density, in order to make full use of water.
Fourth, it is to set up Nile tilapia fish fry to increase the yield of bottom fish. Under the condition of not increasing investment, it can increase production by about 50kg per mu. When it is poor, it can increase production by about 30kg. In ponds dominated by grass carp, the nested Nile tilapia mainly eats organic detritus and plankton, and can also play a role as a “cleanerâ€, and the water quality of the pond is refreshing, making grass carp less susceptible to disease.
1. The watering temperature is about 18°C ​​in early May. To extend the growth period, the seedlings should be completed at the latest in July.
2, stocking density according to pond conditions to grasp, generally set about 1.5cm body length of summer flowers about 1000 / acre. The pond is deeper, the mud is thicker, and the water quality can be put more seedlings as appropriate.
Fifth, it is a set of raising fish and grass carp summer flowers, thinking that the following year breeding a large size of self-cultivation fish. Sets of summer carp and grass carp are generally carried out in July. After the first round of harvest, fertilizer and water are collected at the beginning of July, 1200 tail/mu of large size summer flowers are planted, and the ratio of grass carp and carp is 7:3. Large size fish species available.
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