How to raise seafood in restaurants without dying?

1. First of all, hardware facilities: oxygen pump, thermostat, thermometer, seawater concentration meter, circulating water equipment, refrigeration equipment, filter screen and activated carbon are essential.

2. Crabs: flower crabs, crab crab, precious crabs, swimming crabs, cream crabs and hairy crabs. General water temperature 17- 19 degrees, salinity 23-24%. Generally, it can survive for 7 days, and most crabs can be mixed. Shrimp: crayfish, water temperature 17- 18 degrees, salinity 20-24%. Generally, it can live for 4-6 days and can be mixed with lobsters. The salinity of prawn, Neopenaeus monodon, Oncomelania hupensis, grass shrimp and river shrimp is 15- 18.

3. Lobsters have to survive in shrimps for a long time, so just master its water temperature. In summer, when the water temperature is 13- 15 degrees, change the water frequently, usually once every two days. Winter water temperature 17- 19 degrees, salinity 23-25%, if conditions permit. Fish: Duobao fish and warm fish, with salinity of 15- 19% and water temperature of about 18 degrees in winter and summer. They mix together and change the water once a week.