Stem issues including node topping in differ areas.

[Coppermike]

I’m not sure what caused this to happen but this group started late. In my opinion the pictures will show what the issue is that I’m having basically every time a new set of leaves arrive the next stem above. It will be slightly to the right and then after that to the left. Growing on top of each other. My current set up involves only two light fixtures and one fan that used to blow on the plants and have now been changed to hitting the wall so that it bounces back to the plant

 

[LoveGrowingIt]

Alternating branches are a characteristic of maturation of the plant.