Mixed grow 2x Oreoz

First day on 12/12 I haven’t done much training except once a toping of the main branch. Some of the lower leaves show some yellowing but there is not much I can do against it corse I water all 4 cultivars withe the same batch each time and I don’t want to mix separately… we will see what will happens. Maybe I will give these two once a flush and start again with microbs and co. It seams that they are more sativa than the others maybe one of you got a simple trick or tip how to fix that upcoming issue.