PH question

[aylad]

There isn't a real formula, because how much Borax to add depends on your TA, among other things. You want your pH to be in the 7.2-7.8 range. Borax will raise pH without raising alk. Add it slowly through the skimmer, breaking up clumps, give it a couple of hours to mix, then retest and add as needed.

Janet

[chem geek]

For some rough info, look at this thread. Some day I'll try to get my spreadsheet formulas simplified so they can be put into BleachCalc (by its author).

Richard