Next time leave the roots untouched and just add soil. Damaging the roots will cause weird shit to happen above ground. :jointsmile:

A 1000w hps is more than enough light, usually covers an area of 4 x 4, even up to 5 x 5 with the right reflector. Gotta keep in mind though that it puts out some serious heat, so you'll need to invest as much $$$ or more in ventilation. Check out the growlogs and see how others with 1K's do it.