Culture techniques of pearl grouper
The pond construction of pearl grouper should be planned, especially the depth of the pond and the water temperature control equipment. And pearl grouper has strict requirements on water quality, so strict sterilization steps must be done to ensure the health of pearl grouper. At the time of release, the release density should be determined according to the size of the pool, and it will be easier to feed fish fry as large as possible.
1. Dig and build the site: the most important thing in the early stage of raising pearl grouper is to build a reasonable site, it is best to dig a deep pool of 1.5-1.8 meters, and in order to simulate the condition of the seafloor, need to lay a layer of sand, pearl grouper likes to live on the sand surface, in order to make pearl grouper can better habitat, you can put some aquatic plants in the pond, because pearl grouper is more afraid of cold Therefore, when digging and construction, it is best to install equipment that is more convenient to control the water temperature.
2. Water quality: Pearl grouper has strict requirements on water quality. once there are germs in the pond, it is difficult for pearl grouper to continue to survive. It is best to strictly disinfect the pond before releasing water, which can be sterilized by sunlight for about 15 days. Then disinfect it with diluted lime water. After releasing the water, it is best to bask in the sun for about 15 days, and add appropriate amount of ammonium phosphate and urea to the water.
3, release requirements: "choose a healthier fry for release, the best fry can reach a size of about 3 cm, which can greatly increase the survival rate of pearl grouper, and the density of cultured pearl grouper is not recommended to be too high. 300 fish per mu will be more appropriate, too much may affect the growth rate of pearl grouper.
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