
Traditional set-up for first-timers requires daily water changes, and anti-chlorination. Keeping the water clean is the most important thing that you can do when it comes to these small turtle bowls.
The other thing to consider is that the water level is very shallow. So you cannot leave these bowls out in the sun very long or the turtles will dehydrate or sunstroke to death since they don't have any shade and the water will get very warm on a hot summer day.