Ethol LPD mostly 1+1 for a colder tone, occasionally 1+3 or 1+4 for warm tone. Changing the dilution of LPD changes the tone without changing the developing time. I used to use Dektol to control tone, and Selectol Soft to help control contrast when I printed graded papers. I still have a large supply of both stashed away. I'm willing to part with some if anyone wants to try them.