1, bleaching powder solution cleaning: add two cups of bleaching powder into 4.5 liters of water to make bleaching powder solution, soak the coral in the bleaching powder solution for disinfection 1 week, then soak it for 1 week after cleaning, and remove the odor of bleaching powder adsorbed on the coral. After washing for many times, if the smell of bleaching powder cannot be completely removed, the coral can be washed with flowing water until it has no smell.
2. Boiling and insolation sterilization: For small coral, it can be put into clean water and heated to boiling for about 1 hour, then taken out, washed with tap water to remove impurities and sundries on the surface, then soaked in clean water for 10 ~ 12 hours, washed with water 1 time, and finally insolation sterilization.