IF you were doing a cutoff and 100% sure that you wouldn't O for three days, that would probably be ok (because the RepHresh would raise pH of the lime to 4.5 but then lower the pH of the semen/CM for three days afterwards) I think it's better to never mix lime with RepHresh though - we don't know how high the bump in pH will be, how long it will last, and what if you O early?? If you're sold on lime then do lime with Acijel, Replens, or Sylk.

