Vertical Bubble Machine

This vertical bubble machine blows bubbles not horizontally, but upwards. I needed this for a project: a witch cauldron from which bubbles emerge, glowing in the dark by having UV-A LEDs at the edge of the cauldron and using a UV bubble fluid.

Normal bubble machines have to blow bubbles in a horizontal or nearly horizontal direction, because the bubble wheel has to be oriented horizontally, with the lower part in a tank of bubble fluid. I had different ideas to overcome this problem, and in t