I've had my little group of girls vegging for two weeks under a 300 watt Kind LED 1300. I've had the light steady at about 12" from the top of the plants running 18/6. I'm growing in a "SuperStar LED" model "SuperCloset" stealth grow closet. (www.supercloset.com) It's a fully automated, self-contained hydroponic grow system. Kinda pricey, but I'm too lazy to build my own and I liked the fact that this unit comes with "Lifetime Grow Support" which is surprisingly good and easy to access. So far, I'm really enjoying it and it's worked really, really well.
ATM I have 14 little plants varying in size from 3" to 6" - they're all in groups of 2 and 3 plants of different strains. I germinated from a variety of feminized seeds I purchased online. (Herbies Seeds) I planted a variety of strains hoping to get an early idea which strains were going to flourish under the conditions and nute schedule that Supercloset provided with the box. I'm literally just following their directions and so far it seems to be working.
I'll post some pics later.
Oh, yeah, first post, greetings.