18/6 (on/off) or 24/0 for veg. 12/12 will start and keep them flowering.i have looked everywhere and all through a bunch of grow journals, but i cant find any set lighting schedule. i know that a 12/12 lighting sceuduale is used at some point but thats it. A week by week lighting sceduale would be sick, cmon help a noob out!!
You can stay on 24/0 or 18/6 as long as you want, the plant won't start to flower until you switch to 12/12. Yes you can start with 12/12 but you will sacrifice yield.
That depends, generally when you make the switch to 12/12 the plants will double, or even triple in size...so with that being said if you have three feet of overhead space you'll want to make the switch at about 1 foot. It is all up to you though, training can change your timeframes...you could let it go longer that way and end up with more bud.