hi ginger b i see the same often with autos i get right leggy fuckers and have to supercrop them over a lot,dont find this as often with photoperiods so i guess its from the ruderalis lineage and maybe a reaction to certain led wavelengths but i cant remember which way round it works,one makes em leggy other makes more foliage or something.
outdoor if the sun shines is a winner in my book,good luck dude.