I did not take any pictures of the setup. I use a Camera Axe it is an an Arduino based camera trigger with lots of options including a water valve. In these shots I used a piece of black lexan for the backdrop a blue and red gelled flash on opposite sides and a flash off camera. These were actually quite accidental, but that makes water drop shooting fun, no two are exactly alike. I don't use a completely dark room but dark enough for 2-3 second exposures, the flashes freeze everything ( use manual lowest setting ).