So I collected rain water TDS 4 ppm great compared to my tap water 265 ppm.
But the pH is a different story....
Rain water pH 5.5 and tap water pH 6.5.
I'm sure sodium bicarbonate NaHCO3 will raise the pH since it's alkaline and a satd soln is probably around like 8 plus pH.
However I'm guessing I don't want that sodium ion in there.
So what do people use?
Is pH up a KOH or CaOH2 solution ? What concentration those can be pretty strong bases.
Probably smartest move is to just buy pH up is my guess lol.
I only ask b/c I'd guess others here might collect rain water and donuts for dollars they probably need to raise the pH with acid rain and all