Heres a vid of my new veg/clone area in progress. We are going to be using 2 120 site cloners soon. Strains so far are mendo purp x tucson haze = tombstone, Big bud x northern lights, more strains soon. http://www.youtube.com/watch?v=_AjAD27bv7E
I usually let them go until they show pre flowers, I'm giving them botanicare pbp grow, liquid karma, calmag, silica blast, fulvex, and rock nutrients supercharge, will start to give them 1ml each feeding of floralicious plus
I start in small pots and move them into bigger ones when they show signs of flower. If you don't destroy the roots, you'll be fine, waiting until the soil dries out to pull the plant out of the first pot is usually a good tip
I just chopped a few more 12/12ers here's some random bud shots, strain is Tombstone Tucson haze X Purple kush
And this is how i start them, in 2.6L pots with canna coco/perlite