what i am doing for genius hour

For my Genius Hour I am going to make a no refill windshield wiper tank.  I will have a windshield 
and I will pour water on it. Then the water will pour down the windshield into a rubber half tube. The rubber half tube will lead into three separate plastic tubes. The tubes will lead into the water tank tube. Int the water tank tube their will be a filter and an overflow tube so when there is to much water it will flow out of the car. The filter is for filtering the water of course. that will be my Genius Hour project.