Lowryder being an auto will not be affected by light leaks as it can take 24/0 just fine. LR is a hardy little plant and is one of my fav autos to grow...Your weight is gonna be determined by a lot of factors, with lighting being probably the largest contributor. I use biobizz nutes, grow in nuteless soil under 400w hps...last LR2 yeild avg 42 g between 3 plants....good karma to ya grow...