First of all, no biological or chemical agents, such as iodine, should be used within one week after sowing. During this period, the main requirement is to be stable, not to stimulate shrimp, and to ensure the survival rate.

Then it is best to supplement calcium once on 10 to ensure that the shell will grow up in the future (my idea is to supplement calcium in advance) and the dissolved oxygen should be sufficient. On day 15-20, probiotics such as photosynthetic bacteria should be used to adjust water, and the bottom should be changed on day 25-30.

Then feed the seedlings. If the temperature is stable, feed them normally. If the weather is hot, cold and rainy, it is necessary to control feeding and feed less to ensure that the water quality will not deteriorate.

15- Fresh water needs to be replenished on the 20th day, which can be 5 cm, 5 cm every other day, several times.