I have Bioguard's Optimizer Plus which is tetraborate pentahydrate. Can anyone provide me with the calculation that would show how much tetraborate pentahydrate to use to raise pH and the effect it would also have on TA? I am not looking for a specific number to raise pH, I would just like to be able to figure this out. The pool calculator only shows the calculation for raising pH with borax. Any help would be greatly appreciated.