After writing in water with ink was unsuccessful, I moved on to writing with ink in a glass bowl of oil. The ink didn't precipitate or run in the oil. The writing could be clearly read;

However I wanted to generate more movement and motion in the bowl. I began by writing another sentence vertically over the original. I then shook the bowl in an attempt to make the ink precipitate;

I proceeded to add bleach. This broke up the ink even more, which generated more movement;

But I wasn't finished yet. I added some orange ink to the mix;

Followed by some blue, red and yellow salt that i coloured myself by grinding up pastels;

Some images of the end product viewed from beneath;

And from the side;