Quote Originally Posted by waterbear View Post
If you are talking about borax for raising pH then NO calculator is going to tell you how much to add. You will need to use a base demand test and use twice the weight of borax as you would soda ash for a specific pH rise as determined by the test. Not rocket science and a lot easier than adding a bit and waiting and testing and adding a bit more and waiting and testing until you 'creep up' on your target pH.
So The Pool Calculator's suggestions for how much Borax to add for a specified rise in pH are incorrect?

PS - love the academic debate. Keep it up!