I use Excel spreadsheet to track tank data, not into full controller. Link to a rather dated version of what I've built over the past few years. Mostly my own ideas, but have used some data & formulas designed by others & incorporated into mine. I've made quite a number of changes since posting this version to web. Excel 2000, but it works for my purposes.
https://skydrive.live.com/?cid=a0157...6&sc=documents