There are many people /' growers who follow the circaydian rythm method.

That is, they base a "24 HOUR" day actually on an "18" hour day cycle.

The theory is that a plants usefull energy period is not 12, 14 or even 18 hours, but rather, is 6 - 8 hours.

10 hours on / 8 hours off.

or...

8 hours on / 10 hours off.

You can do it many many ways.

Test for yourself.

For me? I have tested the 14 vs. 12 hours and found the 14 hours to be a stronger buzz. Although, I agree, it may decrease final yeild and bud size.