How do hotels feed rare crabs?

1. The water temperature, salinity and survival time of rare crabs cultured in hotels are 17- 19℃, and the salinity is 23-24%. Generally, it can live for 7 days, and all crabs can be mixed and eaten. Second, little seafood's temporary cultivation method 1, long-term conversion of cool and clean seawater and irrigation of little seafood's dishes with circulating water; 2, the water temperature is controlled within 65438 08 degrees Celsius; 3, the water depth is not more than 2 cm; It's best to find some clean sand and bury little seafood in it for a long time. 5. Be careful not to use strong light or exposure. Three. Precautions 1. When tap water is hooked into seawater, it should be allowed to stand for more than 12 hours in advance to remove impurities in the water. 2. Seawater essence is a special salt for feeding seafood and cannot be replaced by ordinary salt. Feeding seafood does not mean that the more oxygen, the better. If too much oxygen is filled, the gas discharged by the oxygen pump will kill seafood. 4. The pool water should be disinfected frequently with sapphire solution, and 2-3 drops of water should be dropped every 100 kg every time the water is changed.