1. Place the plastic screws upright in two corners of the tank.
2. Place the square acrylic board on top of the screws, creating a sloping bottom.
3. Hold the board in place with the pvc weight placed on the low end of the slope.
4. Fill the tank with water so that on the high end of the slope the water level is
  about 2 cm above the board.
5. Set the period of rotation to 6 seconds per rotation and let the tank achieve solid body rotation.
6. Drop 1 ml of dye into the corner very slowly, try to minimize the effects of gravitational
  velocity by holding the dropper as close to the water line as possible.
7. Drop the dye in about every 1-2 minutes.