Yea and that's just the start. You can play with ambient air temperature and your medium temperature to speed the plant up too.
well, heat speeds up metabolism of any living thing, and the cold slows it down.
probably the main reason staivas grow they way they do. hotter, more intense sun.
the sun cycle is the same in southern asia and mexico and jamacia, some places where sativas are from. steady 14 hours, but the sun is hotter, closer to the equator. jamacia actually only gets 13hrs of sun during july, its hottest month.
and yes trousers, i do, but cannabis wont thrive there well.
ruderalis is from russia, where its cold as fuck and therefore it finishes quick and weak.
regardless, whatever you do, dont have the cycle jumping around.
do it as it works in nature. days are shorter, get longer, then get shorter again, gradually. temps have a direct relationship to this.