The Pool Calculator's "Effects of Adding Chemicals" helps me estimate the pH impact of Trichlor, but not Cal-Hypo or Bleach. My 50,000-gal community pool uses a Trichlor feeder, and I'm investigating the possibility of reducing Trichlor usage and combining with Bleach or Cal-Hypo for a net pH neutral chlorine strategy. Maybe even a slight list to the high pH side, as our make-up water is acidic and the Trichlor is always pulling it down as well. Anyway, how might I approach Cal-Hypo or Bleach from a pH perspective? Would be great if I could say X amount of Trichlor would be offset by Y amount of [high-pH chlorine source like Cal-Hypo or Bleach]. Then I might attempt to split the chlorinating task accordingly between the two for a pH-neutral effect.