It was in a conversation via PM. But the idea is the longer you keep them on a Nitrogen diet with grow nutes the bigger they will get, but if you change to bloom - higher pk - they will start to flower earlier and thus not grow so big. So instead of me waiting until the stretch stopped, before changeing over to bloom nutes. I started feeding bloom nutes 10 days after they showed sex, on around day 24, instead of around day 40 when the stretch had stopped. Hope this helps.