You can keep your lights at 24/0 or 18/6. There is much debate on which is better since many plants generate large amounts of fiber during dark hours. While keeping them on 24/7 will supply a larger amount of energy for growth. I have always used 24/0, but am now trying 18/6 to see if I can see a difference in growth rates. If you're using a 125w Grow Bulb, and it's not a compact flourescent light, you will need a much brighter source of light to get any buds out of it.