25 regular bag seeds, want to find the females need advice.

I got some seeds from a homie who had chemdawg growing but one day his uncle found a marijuana plant while working and he brought it home. Well unfortunately his uncle didn't know it was a male and while my homie was out of town his uncle planted it in his flowering room!!! So sad, but he got a shit ton of seeds from that harvest and I took like 30 or more of them. I have already grew from seed 5 and 2 of them were male 3 of them female. One female was a BIG producer with super big buds off only 150w cfl. Got little over an Oz off the big one, then other two I think we're just dominated by the big plant (check my grow journal, I put some decent pictures of the plants in there). It's an unknown father crossed with Chemdawg so me and my buddy call the strain "Daddy Issues" so there's the back story, now

I still have a lot and need to know the best way I could just germinate them all and then force them to sex so I can discard the males and keep the best females. I have limited space so any ideas? I will eventually transfer them to a hydro set up, and just want to find the best plants of the bunch.

Thanks BS7

give them dark for 24-36 hrs starts the flowering

try to give this a read:

http://www.1stmarijuanagrowerspage.com/how-to-improve-female-male-ratio-of-cannabis-plant.html


p.s.

you could grow a bunch, take the 2-3 best looking of em and take clones, then flower them to find out the sex of your mother plant, then take clones of that best looking female and use them ..

some of the post from the link I just posted, somebody might be interested in the basic facts:

1. Level of nitrogen and potassium of the seedbed: A heightening of the standard level of nitrogen makes for more female cannabis plants originating from the weed seeds. A lowering of the nitrogen level shows more male cannabis plants. A heightening of the level of potassium tends to show more male marijuana plants, while a lowering of the potassium level shows more female marijuana plants. A combination of a higher nitrogen level for the period of a week or two and a lowering of the potassium level is recommended.
2. Humidity and moistness of the seedbed: a higher humidity makes for an increase in the number of female cannabis plants from weed seed, a lowering for an increase in male cannabis plants. The same is valid for the moistness of the seedbed.
3. Level of temperatures: lower temperatures make for a larger number of female marijuana plants, higher temperatures for more male marijuana plants.
4. Colour of light: more blue light makes for female cannabis plants from seed, more red light makes for more male cannabis plants.
5. Hours of daylight: few hours of daylight (e.g. 14 hours) makes for more female individuals, a long day (e.g. 18 hours) makes for more male cannabis plants.