Apr 04, 2015 - 02:11 PM
No. The bottom of my tank is not even either. The result will be the lower the % of fill, the less accurate it will be. The closer it gets to 100%, the more the accuracy will increase. Over time you will learn the actual amounts for a given %. Similar to the gas guage in your car. An option is to fill the tank with a known amount of water (ie, use a five gallon bucket) and record the % at several levels.