Shooting film at night, I would like to get extreme compression of the tonal values with BW film (Fomapan 100). I am using xtol for standard development in Jobo 3010 (1:1 for 5min). I was wondering whether I could use Xtol for a sort of divided developer effect by using 1:1 xtol for the first say 2-3 minutes then highlu dilute xtol (1:20?) for an additional 10? Would this work?