Should I put stones, water and sand in the pot to raise turtles?

It is not good to drain rocks and sand, because it is airtight. Put a slightly angular stone in the turtle's jar. When the tortoise wants to grow up, it rubs its back. It is recommended to change the water in parts every day. It is not necessary to change the water in the whole cylinder unless the water and the periphery of the cylinder are dirty. In this way, the turtle that changes water will not have white eye disease or rotten nails.