Hey I'm growing sr too! Keep em on 20/4 light cycle, start them in pots they will finish(autos don't transplant well). Start them under flouros or cfl for like 2-3 wks then switch to MH or hps bulb depending on flower growth. Don't feed til atleast third week, and when you do, feed lite. I use technaflora recipe for success at 1/4 strength. High temps, strong light early, transplanting and early nutes will cause problems, mainly stunted growth. Other than that you're good, just maintain a ph between 5.8-6.5 you'll see results!