I was wondering if someone with some experience and testing could help me out with my drip system for my veg room. Theres obviously tons of combinations of time on and off for watering but what do most of you guys do? 24 hours on seems to work with purlite, it seems that there is always area's for the roots to get at oxygen. Im wondering though that if i start playing around with the timing can give them less water then maybe with more exposer to oxygen the plant will grow faster? I'm no expert and plan to mess play around a little but i don't want to damage a good thing so i was hoping i could get any advice. oh and one other thing is there any advantage to setting your veg room to 18/6 hour light, besides the fact you'll save the 6 hours of energy use. Does the plant grow any better in the dark hours or will you get the best growth just leaving the light on all the time as well?