How to domesticate loach

To raise loach in a water tank at home, it is necessary to spread 30 cm thick mud pond soil on the bottom of the water tank, then inject tap water into the water tank, dry it in the sun for 3-5 days, then put the loach in the water tank, put the water tank in a place where the sun can shine, and change fresh water every 5- 10 days to avoid the death of the loach.