Acid is a milky gypsum-like thing, which will break when twisted by hand, and occasionally there will be pebbles in it. If you don't excrete acid for a long time, large stones will form in your body. If it can't be excreted, it will block the intestine and cause the turtle to die. The main method to promote acid discharge is soaking in water regularly. Generally, young turtles soak in water of 30~40 degrees once a day for 30~60 minutes each time.