I just made a post, and it got me to thinking after I posted it. I was posting in a thread where he was bitching about getting all males, and rightfully so. I'd be pissed if that happened to me too. My post included a quote from dutch passion seed company that says: From literature and our own findings it appears that the growth of a male or female plant from seed, except for the predisposition in the gender chromosomes, also depends on various environmental factors. The environmental factors that influence gender are: * a higher nitrogen concentration will give more females. * a higher potassium concentration will give more males. * a higher humidity will give more females. * a lower temperature will give more females. * more blue light will give more females. * Fewer hours of light will give more females. It is important to start these changes at the three-pairs-of-leaves stage and continue for two or three weeks, before reverting to standard conditions. What got me to thinking was the line that said: Fewer hours of light will give more females. The reason I point this out is, I've seen a few debates recently about 18/6 lighting vs 24/0 lighting. If the above paragraph is correct and true, wouldn't 24/0 produce more males?