Borax dosing

[paigemetoo]

Is there a chart or guidelines to dosing borax?
Like ____ amount of borax will raise the ph ______amount for every ____gallons of pool water.
Have yellow reading(i know this could be way lower then 7) and need to know how many boxes I could poss need.

7 ph most likely lower
7 alk
30 cya
15 c

THX!!!