[science]

Listen, I have been growing for the past 8 years. INdoors and out. Whatever you do, what you start out with is what you should keep doing through the seddling and veggie stage. If you change the cycle at all you can cause light stress, hermie syndrom, or even force the plant to onset, yes thats right, if you start out with a 24/0 cycle and then change it to a 18/6 it can cause the plant to think it is time to flower causing prematuer flowering and self polination. In my personal opinion I think that 24/0 is the best and have seed 25%increase in the plants grown on the 24/0 opposed to the 18/6 cycle. Some people say after 18 hours of light the plant doesnt take in any more energy. Well that is true but only in the flowering and pre flowering stage is this the case. While in veggie stage the more light the more growth. They both work fine but if you start with one keep doing it. Just make sure when flowering to go 12/12.