I too only use 24/0,there is no veg stage in plants,we only call it that before we change the lighting to 12/12.The way i see it is a plant will use all the light available to grow while it can,once WE change the lighting the plant changes taking nitrogen in(which produces plant matter growth)and uses phospherous(spelling?) to build plant flower growth,hers a title on youtube to check it out:
Gardening Tips : What Does Phosphorus Do for Plants?
I think why waste time with 6 hours of wasted growing time...Only my opinion.
Keep toking all!!!
Oh,And when the question about cost comes in with running the lighting all hours,i say FUCK THE COST...