How to Make Glowing Water Out of Highlighters
- 1). Use a knife to carefully cut a highlighter the length of the pen. Peel back the plastic and remove the felt tip and ink from the pen.
- 2). Put the felt and the tube of ink into 1 cup of water. Allow to soak for up to an hour.
- 3). Pick up the ink tube and squeeze any remaining ink into the water. Remove and discard the ink and the felt tip.
- 4). Mix the florescent-colored water with clean water up to a 1-to-1 ratio or add it to fountains or sealed jars.
- 5). Turn off the overhead lights, and expose the water to a black light. It will glow under the black light.
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