Quote Originally Posted by Racerx
those are from clones, which as you read, carry the age of the mother so they were already mature. Those clones were rooted, then had 3 weeks of veg growth, and then into flowering. My unknown soil sativas were far less developed after 2 weeks as they were grown from seed with only 4 weeks of veg.
good point, those plants are mature
maybe bump up the P a little bit? or if your room has light leaks.. those are the only 2 things i can think of... are you using a HPS

i went really light on my dry nutes and my plants showed sex in 4 days under a 400w hps with 30 days vegging--and that was from seed