Looks like a lava lamp setup. Some sort of sugar/orange juice mixed with water. The light at the bottom heats it up and the current rotates the yukkuri.
The Yukkuri's would need their anyru and pee holes sealed up
Baby yu inserted room lightBaby yu inserted room light will light your room with gentle fantasy.High sugar concentration so they won't die.
Growth stoppage drugs inserted so they won't grow larger.