I have a half brained idea for automatic watering. Somehow I would like to use something like a 5 gallon bucket for a water basin with a large base on the bottom for the water to flow into. I was thinking of using a toilet tank float to control the level of the water. When it gets low the water will come on and when it gets to a certain level the float will shut it off. Does anyone have any suggestions on how I can do this and what I'd need to make it happen?