1. Take a clear silt and put some Arm&Hammer into it.

2. Fill the silt with water to approx the 3/4, and wait until the Harm&Hammer get into the bottom of the silt.

3. Put some red, blue or green colouring in some vinegar and put MAXIMUM 2 to 3 drop into the water (if you put more, it may get over the silt side or get stuck in the bottom… Your lamp will not work if it does). Observe and add new drops when the effect goes down.

4. To add coolness in the magic reaction, put a coloring light behind the silt.

Enjoy!