In the 2009 NSPF Pool & Spa Operator Handbook it states "Sodium bicarbonate should not be used to raise pH on a regular basis. The correct method is to use sodium bicarbonate to achieve the desired total alkalinity and then if further correction is necessary, use soda ash."
I had never heard that until reading it in this book. It doesn't exactly state why as far as I can tell. Is there any truth to the statement?
EDIT: Never mind -- I misread this and thought it was referring to using baking soda to raise alkalinity, not PH. Please delete.