I have a very nice looking sativa (long skinny fingers) and it is getting very tall it is now 18" decent internode distance the nodes are not alternating yet I usually wait a couple of weeks after this happens but with the speed this plant is growing it may get too big... I have plenty of headroom but most other plants i grow average 3 feet and if this one ends up being 5+ feet tall I will have to raise the lights far above the smaller plants. So my question is topping a sativa a good idea? bad idea? no real difference? I top most of my plants just never had 1 that looked like this or grew this fast.