If the city tap water is used as the water source for raising seafood, it must be exposed to the sun or dechlorinated by chemical methods before use. The dechlorinated water is adjusted to the required salinity with deep seawater or solid seawater to make artificial seawater, which can be used to store seafood.
2. The suitable water temperature of seafood is generally kept at 18℃- 15℃. When the temperature rises, the oxygen content in water will decrease, which will affect the change of water quality and cause hypoxia. The increase of water temperature will also promote the growth and reproduction of bacteria in water. Therefore, when the temperature is too high, it is not good for the biological body, and it is easy to cause diseases and losses. When the water temperature is too low, it will affect its survival rate, so try to raise the water temperature.
3. The dissolved oxygen content in pickled seafood water should be kept above 5 mg/L, and below 3 mg/L, it is not suitable for fish to survive. The content of dissolved oxygen in water is related to storage density, the amount of organic matter in water and air pressure.
Therefore, the dissolved oxygen content in the water can be improved by improving the water quality, configuring the aeration device, increasing the number of water changes, reducing the storage capacity, increasing the illumination time, and filtering the water in the temporary storage tanks (tanks and tanks) by using the water circulation system.
Extended data
Storage of seafood
Take fresh fish as an example. Before putting it in the refrigerator, we should do some treatment to remove internal organs and scales, clean it, cut it into fish pieces and wrap it in plastic bags to avoid the spread of fishy smell of fresh fish.
Frozen fish can be stored directly in the freezer, preferably frozen, but it should be noted that frozen fish is thawed and should not be kept in the refrigerator for a long time.
In the storage of prawns, the prawns should be washed with clear water, put into a metal device, injected with cold water and put into a freezer; Take it out after freezing, leave it at room temperature for a period of time, pour out the frozen shrimp pieces, then wrap them in fresh-keeping bags and store them in the freezer.
Generally, seafood can be stored in the refrigerator for a long time, but cooked fish food will not be stored in the refrigerator for too long, which will affect the taste. It should be sealed in the refrigerator, otherwise it will make the refrigerator full of odor.
People's Network-How to use the refrigerator correctly? Tips for keeping seafood fresh
Baidu encyclopedia-seafood