A Special Type of Pen and Ink is Needed. The special pen's bead is significantly small, and this in turn creates no vortices that destroy what a person tries to write into water.

An ion-exchange bead serving as a pen. ... "We have put the ink directly in the water and use a microbead made of ion-exchange material with a diameter of 20 to 50 microns as a writing instrument ...

Always wondered how to make a homemade quill pen and ink? ... Place the beets and water in a large stockpot. Boil for 45 minutes or longer.