This is my first post. I have been looking for a spreadsheet to do the calculations, and I found this thread. I decided to create my own based off the website http://www.poolcalculator.com/ All I did was format the calculations from the website into the spreadsheet for ease of use.
I thought I would share it, I prefer to use a spreadsheet.
EDIT: - Deleted my first upload, Just uploaded an updated version with a few fixes and layout changes, graphs - protected the cells with the formulas so they can't be typed in. (No password required to unprotect them)