Its ok keep the light on 24/7 for a few weeks. After they root you may see new leaves grow less fingers and do some funny things like 1 or 3 fingers instead of the usual 5 or 7 fingers. Keep the lights on em 24/7 until what appears to be normal leaf growth and then you can cut the light back to whatever veg schedule your normally on. No knots yet on mine, they definatly stretched tho. I'm in the valley too.