Add 3.4 kg of sea crystal per 100 kg of tap water. Generally, the salinity of Meretrix meretrix is 17 to 18 degrees. When blending, directly pour the sea crystal into tap water. If you are not at ease, you can spend twenty or thirty yuan to buy a salinity meter to observe salinity.

Sea crystal is the product of seawater and salt chemical industry, which is mainly produced by a series of processes such as evaporation, centrifugation and concentration of seawater or brine. Basically, the main component of seawater is concentrated seawater.

Selectively adding trace elements can not only supplement some elements and compounds lost in the production process, but also make the whole product more practical. For example, adding selenium and molybdenum can not only promote the growth of aquatic animals, but also make them develop in a healthier and more nutritious direction.

Extended data:

Matters needing attention in raising mussels:

1, Selection of breeding grounds The breeding of Meretrix meretrix should be carried out near the beach with a large amount of sand and in a relatively flat place with smooth air.

2. Selection of Meretrix meretrix seedlings There are three kinds of Meretrix meretrix seedlings: white seedlings, medium seedlings and large seedlings. Choose different Meretrix meretrix seedlings according to your own needs. When selecting seedlings, we should pay attention to the fact that the size of each batch of Meretrix meretrix seedlings should be uniform, the shell should not be damaged, and it looks stronger and more energetic.

3. The time of sowing seedlings depends on the size of seedlings. Generally, white seedlings are in April-May, middle seedlings are in 65438+February to the following spring, and big seedlings are before spawning.