Friends just found out that the kind of lightning determines how many males and females come out. best is to use new metal halide HPT lightning from the beginning. Using Phillips Agro or Osram Planta with more red spectrum will get us a lot more males!
Jesus... how does that compare to the Big Metal Halide in the Sky?
See, this is my very first time EVER starting seeds indoors. I do seed runs every year, but outside. They get the natural photoperiod from the moment they pop (I'm at 34*N). Now I'm doing it in my room, under controlled conditions. I wasn't sure about anything else, but I do have a mother (clone) so I'm using the interrupted photoperiod I use for putting clones out. Seeds it's never been an issue, I just wait for them to show sex, then the girls go in one place and the boys in another. It never occurred to me that more than whether or not the plant flowers might be being controlled not only by photoperiod, but by wavelengths.
On the other hand, wouldn't the heavy Sativas be perfectly happy with a 12/12 photoperiod from the start? Being tropical, equatorial in origin and all.
In any event, I'm using a MH bulb (can't recall the Kelvin rating, I think it's around 4,000K) and a T5 rig, daylight bulbs. Am I going to end up with a buttload of males due to the lighting, or am I misunderstanding what you've written?
Thanks!
Btw, I have a longtime online friend in Eindhoven, and she's often posting up stories about Phillips. Good manufacturer.